A289904 Number of edge covers in the n-triangular honeycomb acute knight graph.

0, 0, 1, 16, 4913, 13481272, 272624565213, 43591165915025672, 54987285852263666792584, 546490452644177272846400450304, 42801199124555963417196629935933733033, 26416976791435052534725445524174519235494961992

Offset

1,4

Links

Table of n, a(n) for n=1..12.

Eric Weisstein's World of Mathematics, Edge Cover

Crossrefs

Cf. A287230, A289906.

Sequence in context: A090045 A201241 A123280 * A375104 A181028 A258583

Adjacent sequences: A289901 A289902 A289903 * A289905 A289906 A289907

Keyword

nonn

Author

Eric W. Weisstein, Jul 14 2017

Extensions

a(10)-a(12) from Andrew Howroyd, Dec 26 2017

Status

approved