A370227 Number of chordless cycles in the n-triangular honeycomb acute knight graph.

0, 0, 0, 0, 0, 0, 1, 3, 9, 25, 69, 201, 620, 1923, 6339, 22238, 82443, 333723, 1490051, 7241421

Offset

1,8

Links

Table of n, a(n) for n=1..20.

Stan Wagon, Graph Theory Problems from Hexagonal and Traditional Chess, The College Mathematics Journal, Vol. 45, No. 4, September 2014, pp. 278-287.

Eric Weisstein's World of Mathematics, Chordless Cycle

Crossrefs

Sequence in context: A211291 A211294 A211297 * A297590 A244934 A291594

Adjacent sequences: A370224 A370225 A370226 * A370228 A370229 A370230

Keyword

nonn,more

Author

Eric W. Weisstein, Feb 12 2024

Status

approved