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A067676
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Number of fixed directed convex polyominoes with n cells.
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1
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1, 2, 5, 13, 33, 82, 200, 481, 1144, 2699, 6329, 14775, 34381, 79819, 185001, 428290, 990716, 2290424, 5293153, 12229209
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| 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. A067675 (fixed convex polyominoes), A191148 (fixed line-convex polycubes in 3 dimensions).
Sequence in context: A088921 A005183 A005348 * A116703 A007443 A120925
Adjacent sequences: A067673 A067674 A067675 * A067677 A067678 A067679
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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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