A057408 Number of self-avoiding polygons of area n with 3 (self-avoiding polygon) holes on square lattice (not allowing rotations).

10, 212, 2530, 22640, 169906, 1131904, 6920388, 39668532, 216315230, 1133876128, 5757104542, 28478125312, 137854314576, 655307492388, 3067528095994, 14171567365156, 64732059542906, 292778085749036

Offset

18,1

Links

I. Jensen, Table of n, a(n) for n = 18..47 (from link below)

I. Jensen, More terms

Crossrefs

Sequence in context: A327411 A112364 A201621 * A280903 A239770 A239771

Adjacent sequences: A057405 A057406 A057407 * A057409 A057410 A057411

Keyword

nonn

Author

N. J. A. Sloane, Aug 30 2000

Status

approved