A391975 Number of irredundant sets in the n-triangular honeycomb bishop graph.

2, 5, 19, 94, 559, 3958, 32957, 320080

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Eric Weisstein's World of Mathematics, Irredundant Set.

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

Crossrefs

Sequence in context: A052169 A020019 A020109 * A020015 A363210 A291061

Adjacent sequences: A391972 A391973 A391974 * A391976 A391977 A391978

Keyword

nonn,more

Author

Eric W. Weisstein, Dec 25 2025

Extensions

a(8) from Eric W. Weisstein, Feb 12 2026

Status

approved