A316196 Number of symmetric self-avoiding polygons on hexagonal lattice with perimeter n, not counting rotations and reflections as distinct.

0, 0, 1, 1, 1, 4, 3, 10, 9, 36, 27, 129, 90, 449, 331

Offset

1,6

Links

Table of n, a(n) for n=1..15.

Hugo Pfoertner, Illustration of polygons of perimeter <= 11.

Crossrefs

Cf. A036418, A284869, A306176.

Sequence in context: A325997 A075563 A299325 * A081617 A103252 A065763

Adjacent sequences: A316193 A316194 A316195 * A316197 A316198 A316199

Keyword

nonn,walk,more

Author

Hugo Pfoertner, Jun 27 2018

Status

approved