id:A057779 - OEIS Search Results

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Hexagonal polyominoes (or polyhexes, A000228) with perimeter 2n.

+0
4

0, 0, 1, 0, 1, 1, 3, 2, 12, 14, 50, 98 (list; graph; listen)

	OFFSET	`1,7`
	LINKS	`Andrew Clarke, Isometric Polyhexes` `Picture from Andrew Clarke's page showing the polyhexes of perimeters 6, 8, ... 16.`
	CROSSREFS	`Cf. A000228, A000105, A057730.` `Sequence in context: A122407 A098646 A129925 this_sequence A005220 A152550 A114798` `Adjacent sequences: A057776 A057777 A057778 this_sequence A057780 A057781 A057782`
	KEYWORD	`nonn,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 29 2000`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.