id:A057729 - OEIS Search Results

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Number of triangular polyominoes (or polyiamonds) [A000577] with perimeter n.

+0
6

0, 0, 1, 1, 1, 4, 5, 16, 37, 120 (list; graph; listen)

	OFFSET	`1,6`
	REFERENCES	`a(10) found by Brendan Owen.`
	LINKS	`Andrew Clarke's Isometric Polyiamonds page` `Picture from Andrew Clarke's page showing the 4 polyiamonds of perimeter 6 and the 5 of perimeter 7.`
	CROSSREFS	`Cf. A000577.` `Sequence in context: A092809 A058622 A064294 this_sequence A110278 A013628 A127007` `Adjacent sequences: A057726 A057727 A057728 this_sequence A057730 A057731 A057732`
	KEYWORD	`nonn,nice,more`
	AUTHOR	`njas, Oct 29 2000`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.