A057406 Number of self-avoiding polygons of area n with one (self-avoiding polygon) hole on square lattice (not allowing rotations).

1, 12, 88, 524, 2786, 13788, 64998, 296032, 1314648, 5728172, 24595512, 104399172, 439084884, 1833027048, 7605691356, 31398503248, 129072844079, 528688519536, 2158900271080, 8792641674684, 35728408159781

Offset

8,2

Links

I. Jensen, Table of n, a(n) for n = 8..41 (from link below)

I. Jensen, More terms

Crossrefs

Sequence in context: A348415 A082814 A178257 * A392580 A125349 A164608

Adjacent sequences: A057403 A057404 A057405 * A057407 A057408 A057409

Keyword

nonn

Author

N. J. A. Sloane, Aug 30 2000

Status

approved