A056883 - OEIS

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A056883

Number of n-celled rotationally symmetric polyominoes without holes.

0, 0, 0, 1, 1, 5, 4, 18, 19, 72, 72, 268, 276, 1002, 1043, 3733, 3926, 14000, 14810, 52658, 55987, 199020, 212364, 754826, 807861, 2872926, 3082202, 10966333 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,6`
	LINKS	`Tomas Oliveira e Silva, Enumeration of polyominoes`
	CROSSREFS	`Sequence in context: A177765 A190728 A100791 * A006747 A184297 A108412` `Adjacent sequences: A056880 A056881 A056882 * A056884 A056885 A056886`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Sep 03 2000`

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Last modified February 16 19:05 EST 2012. Contains 205943 sequences.