A356616 Number of SAPs crossing a triangular domain of the hexagonal lattice and including top vertex.

1, 1, 4, 36, 666, 24696, 1808820, 259300148, 72369408510, 39205936157880, 41152969216872016, 83592236529606631688, 328284931491454739745904, 2490876950205850778116435156, 36494758452603010620499864088198, 1032033208911845667821292289616451218

Offset: 1

Author

Vaclav Kotesovec, following a suggestion from Anthony Guttmann, Aug 16 2022

Keywords

• nonn

Links

• Anthony J. Guttmann, Table of n, a(n) for n = 1..26
• Anthony J. Guttmann and Iwan Jensen, Self-avoiding walks and polygons crossing a domain on the square and hexagonal lattices, arXiv:2208.06744 [math-ph], Aug 13 2022, Table D9.

Crossrefs

Cf. A001006, A002026, A007764, A116485.