id:A056883 - OEIS Search Results

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Number of n-celled rotationally symmetric polyominoes without holes.

+0
1

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; listen)

	OFFSET	`1,6`
	LINKS	`Tomas Oliveira e Silva, Enumeration of polyominoes`
	CROSSREFS	`Sequence in context: A154225 A143129 A100791 this_sequence A006747 A108412 A133167` `Adjacent sequences: A056880 A056881 A056882 this_sequence A056884 A056885 A056886`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Sep 03 2000`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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