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A259332
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Triangle read by rows: T(n,k) = number of column-convex polyominoes with perimeter n and k columns (1 <= k <= n).
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1
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1, 1, 2, 1, 6, 5, 1, 12, 27, 14, 1, 20, 85, 112, 42, 1, 30, 205, 492, 450, 132, 1, 42, 420, 1582, 2565, 1782, 429, 1, 56, 770, 4172, 10415, 12562, 7007, 1430
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refs;
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OFFSET
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1,3
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LINKS
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EXAMPLE
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Triangle begins:
1,
1,2,
1,6,5,
1,12,27,14,
1,20,85,112,42,
1,30,205,492,450,132,
1,42,420,1582,2565,1782,429,
1,56,770,4172,10415,12562,7007,1430,
...
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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