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

1,3

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.

Sequence in context: A365650 A214347 A208732 * A029989 A163887 A156630

Adjacent sequences: A356613 A356614 A356615 * A356617 A356618 A356619

Keyword

nonn

Author

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

Status

approved