id:A057410 - OEIS Search Results

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

+0
4

1, 12, 94, 604, 3463, 18440, 93274, 454412, 2151673, 9964500, 45335002, 203303760, 900901387, 3952468348, 17194102478, 74257185512, 318693463933, 1360298775524, 5778468266446, 24442845038580 (list; graph; listen)

	OFFSET	`8,2`
	LINKS	`I. Jensen, Table of n, a(n) for n = 8..103 (from link below)` `I. Jensen, More terms`
	CROSSREFS	`Sequence in context: A044263 A044644 A073913 this_sequence A045894 A045829 A009647` `Adjacent sequences: A057407 A057408 A057409 this_sequence A057411 A057412 A057413`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 30 2000, corrected Aug 29 2006`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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