id:A093120 - OEIS Search Results

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Number of convex polyominoes with a n+1 x n+1 minimal bounding square.

+0
2

5, 68, 1110, 19010, 329126, 5693968, 98074332, 1680306750, 28638104550, 485731377560, 8202665891316, 137983709713668, 2313146752430780, 38658742468243520, 644327268137066104, 10712855104602481206 (list; table; graph; listen)

	OFFSET	`1,1`
	LINKS	`V. J. W. Guo and J. Zeng, The number of convex polyominoes and the generating function of Jacobi polynomials.`
	FORMULA	`(2+n)/2C(4n, 2n) - nC(2n, n)^2, n>0.`
	CROSSREFS	`Main diagonal of triangle A093118.` `Adjacent sequences: A093117 A093118 A093119 this_sequence A093121 A093122 A093123` `Sequence in context: A003361 A099334 A029812 this_sequence A092817 A051538 A034944`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Ralf Stephan, Mar 21 2004`

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.

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