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Search: id:A121750
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| A121750 |
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Number of columns of even length in all deco polyominoes of height n. A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column. |
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3
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| 0, 1, 5, 26, 184, 1338, 11652, 108210, 1140336, 12849714, 159858900, 2117522754, 30442090248, 463511103426, 7569181895436, 130254363597330, 2383020441932256, 45738553437874962, 927010880040945924
(list; graph; listen)
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