A289901 Number of (undirected) cycles in the n-triangular honeycomb acute knight graph.

0, 0, 0, 2, 9, 30, 103, 435, 2469, 18958, 194091, 2661243, 49287232, 1236661032

Offset

1,4

Links

Table of n, a(n) for n=1..14.

Eric Weisstein's World of Mathematics, Graph Cycle.

Crossrefs

Cf. A290331 (number of undirected paths).

Sequence in context: A192518 A277241 A201164 * A261330 A101604 A234007

Adjacent sequences: A289898 A289899 A289900 * A289902 A289903 A289904

Keyword

nonn,more

Author

Eric W. Weisstein, Jul 14 2017

Extensions

a(14) from Eric W. Weisstein, Dec 16 2023

Status

approved