A056880 - OEIS

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A056880

Number of n-celled polyominoes without holes, symmetric about axis 2.

0, 1, 1, 1, 1, 2, 3, 4, 4, 6, 10, 11, 16, 18, 33, 34, 56, 56, 110, 106, 193, 177, 372, 335, 662, 571, 1269, 1084 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,6`
	LINKS	`Tomas Oliveira e Silva, Enumeration of polyominoes`
	CROSSREFS	`Sequence in context: A007896 A074139 A017832 * A053273 A049988 A079247` `Adjacent sequences: A056877 A056878 A056879 * A056881 A056882 A056883`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Sep 03 2000`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.