A056881 - OEIS

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A056881

Number of n-celled diagonally symmetric polyominoes without holes.

0, 0, 1, 0, 2, 2, 6, 5, 21, 18, 70, 61, 239, 206, 828, 711, 2903, 2485, 10314, 8791, 37031, 31451, 134147, 113566, 489672, 413419, 1799084, 1515282 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,5`
	LINKS	`Tomas Oliveira e Silva, Enumeration of polyominoes`
	CROSSREFS	`Sequence in context: A054917 A111419 A174399 * A184158 A060779 A029594` `Adjacent sequences: A056878 A056879 A056880 * A056882 A056883 A056884`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Sep 03 2000`

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Last modified February 14 18:47 EST 2012. Contains 205663 sequences.