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A067675
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Number of fixed convex polyominoes with n cells.
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3
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1, 2, 6, 19, 59, 176, 502, 1374, 3630, 9312, 23320, 57279, 138536, 331032, 783630, 1841867, 4306172, 10028276, 23288394, 53974959
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| Gadi Aleksandrowicz, Andrei Asinowski and Gill Barequet, A polyominoes-permutations injection and tree-like convex polyominoes, Journal of Combinatorial Theory, Series A, Volume 119, Issue 3, April 2012, Pages 503-520; http://www.sciencedirect.com/science/article/pii/S0097316511001671
M. Bousquet-M\'elou and J.-M. F\'edou, The generating function of convex polyominoes: the resolution of a q-differential system, Discrete Math. 137 (1995) 53-75
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CROSSREFS
| Cf. A067676 (fixed directed convex polyominoes), A191148 (fixed line-convex polycubes in 3 dimensions).
Sequence in context: A192715 A121483 A077834 * A037512 A111277 A014346
Adjacent sequences: A067672 A067673 A067674 * A067676 A067677 A067678
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KEYWORD
| nonn
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AUTHOR
| S. R. Finch (Steven.Finch(AT)inria.fr), Feb 04 2002
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