id:A056634 - OEIS Search Results

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Number of polygons of length 2n with one hole on square lattice (not allowing rotations).

+0
3

1, 24, 342, 3804, 36802, 326540, 2735308, 22006264, 171912401, 1313614776, 9868281330, 73150450248, 536495354621, 3900954906412, 28164962681150, 202166363020920, 1444068530799525, 10272599729628876 (list; graph; listen)

	OFFSET	`8,2`
	LINKS	`I. Jensen, Table of n, a(n) for n = 8..41 (from link below)` `I. Jensen, More terms`
	CROSSREFS	`Cf. A002931.` `Sequence in context: A125459 A077527 A083766 this_sequence A022748 A004325 A075621` `Adjacent sequences: A056631 A056632 A056633 this_sequence A056635 A056636 A056637`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 30 2000`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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