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Flutter Pascal Triangle Card with Odd Entry Pattern and Row Sums
A Flutter Pascal's triangle card for maths and tutoring apps: rows 0 to 7 as binomial coefficient tiles, odd entries shaded so the Sierpinski pattern shows, and a row sum gutter doubling from 1 to 128. Counts 36 entries, 27 odd, 255 total. Centred wind_kit rows, one node per number.
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child: WIcon(
Icons.science,
className: 'text-white text-xl'
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WDiv(
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children: [
WText(
'Pascal’s Triangle',
className: 'text-base font-bold text-gray-900 dark:text-white'
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WText(
'Binomial coefficients',
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WDiv(
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'Rows 0 to 7',
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'Σ',
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WText(
'2',
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'1',
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'4',
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WText(
'3',
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WText(
'3',
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WText(
'8',
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'4',
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WText(
'6',
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WText(
'4',
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WText(
'1',
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]
),
WText(
'16',
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'5',
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'32',
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WText(
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WText(
'15',
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WText(
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WText(
'6',
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),
WText(
'7',
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),
WText(
'21',
className: 'w-[30px] h-[24px] rounded-md text-center text-xs pt-[5px] bg-amber-400 dark:bg-amber-500 border border-amber-400 dark:border-amber-500 text-gray-900 dark:text-gray-900 font-bold'
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WText(
'35',
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'35',
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WText(
'21',
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WText(
'7',
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WText(
'1',
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)
]
),
WText(
'128',
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)
]
),
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className: 'flex flex-row items-center gap-[11px] mt-4',
children: [
WDiv(
className: 'flex flex-col items-center w-[92px] rounded-xl border border-gray-200 dark:border-gray-700 py-2',
children: [
WText(
'36',
className: 'text-lg font-bold text-gray-900 dark:text-white'
),
WText(
'Entries',
className: 'text-[10px] text-gray-500 dark:text-gray-400'
)
]
),
WDiv(
className: 'flex flex-col items-center w-[92px] rounded-xl border border-gray-200 dark:border-gray-700 py-2',
children: [
WText(
'27',
className: 'text-lg font-bold text-amber-600 dark:text-white'
),
WText(
'Odd, 3³',
className: 'text-[10px] text-gray-500 dark:text-gray-400'
)
]
),
WDiv(
className: 'flex flex-col items-center w-[92px] rounded-xl border border-gray-200 dark:border-gray-700 py-2',
children: [
WText(
'255',
className: 'text-lg font-bold text-indigo-600 dark:text-white'
),
WText(
'All rows',
className: 'text-[10px] text-gray-500 dark:text-gray-400'
)
]
),
]
),
WText(
'Odd entries trace Sierpinski’s triangle.',
className: 'text-xs text-gray-500 dark:text-gray-400 mt-3'
),
WDiv(
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child: WButton(
className: 'w-full rounded-2xl bg-amber-500 dark:bg-amber-500 py-3 flex flex-row items-center justify-center gap-2',
child: WText(
'Add row 8',
className: 'text-sm font-semibold text-gray-900'
)
)
),
]
)
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