A391976 Number of irredundant sets in the n-triangular honeycomb obtuse knight graph.

2, 8, 64, 250, 2256, 25591

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Eric Weisstein's World of Mathematics, Irredundant Set.

Eric Weisstein's World of Mathematics, Triangular Honeycomb Obtuse Knight Graph.

Crossrefs

Sequence in context: A295232 A394486 A287229 * A323853 A354276 A353821

Adjacent sequences: A391973 A391974 A391975 * A391977 A391978 A391979

Keyword

nonn,more

Author

Eric W. Weisstein, Dec 25 2025

Status

approved