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A121772 Series expansion for first area weighted moment of neighbor-avoiding polygons on square lattice. 1
0, 1, 0, 6, 30, 246, 1670, 11132, 71292, 442642, 2685392, 15995460, 93918296, 545202570, 3136082636, 17904903342, 101594620516, 573479526968, 3222969297490, 18045116141404, 100704940182826, 560417613651508 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

I. Jensen, Table of n, a(n) for n = 1..41 (from link below)

I. Jensen, More terms

CROSSREFS

Sequence in context: A009689 A228873 A133668 * A270845 A277073 A052585

Adjacent sequences:  A121769 A121770 A121771 * A121773 A121774 A121775

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 30 2006

STATUS

approved

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Last modified June 14 05:51 EDT 2021. Contains 345018 sequences. (Running on oeis4.)