A293249 Number of matchings in the n-triangular honeycomb bishop graph.

1, 3, 24, 624, 58258, 21423356, 33352210384, 234271975272172, 7849205797114197704, 1318509837007765330964948, 1161589241831987552884873549832, 5592410686612429649991093735982825800, 152814054664056604403587836700924195641924920

Offset: 1

Author

Eric W. Weisstein, Oct 03 2017

Keywords

• nonn

Comments

C# software that can be used to compute this sequence can be found in A270228 (with rook column heights of 1..n). - Andrew Howroyd, Oct 04 2017

Links

• Eric Weisstein's World of Mathematics, Independent Edge Set
• Eric Weisstein's World of Mathematics, Matching

Crossrefs

Cf. A270228.

Extensions

a(8)-a(13) from Andrew Howroyd, Oct 04 2017