A289708 Number of matchings in the n-triangular honeycomb queen graph.

1, 4, 51, 2468, 516950, 514413280, 2620954569792

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Eric Weisstein's World of Mathematics, Independent Edge Set

Eric Weisstein's World of Mathematics, Matching

Crossrefs

Cf. A011848 (matching number), A289878, A289884, A289709.

Sequence in context: A235326 A210834 A287231 * A000516 A182044 A000854

Adjacent sequences: A289705 A289706 A289707 * A289709 A289710 A289711

Keyword

nonn,more

Author

Eric W. Weisstein, Jul 14 2017

Extensions

Name corrected by Andrew Howroyd, Jul 17 2017

Status

approved