A068303 1/14 the number of colorings of an n X n octagonal array with 14 colors.

1, 1716, 303771468, 5550709388138772, 10469390085669243613847820, 2038288377309848857407579410051499636, 40962006853292026329447493002836988654168890167788, 84970500229420999013828420742335437041383054287385138553076248252

Offset: 1

Author

R. H. Hardin, Feb 24 2002

Keywords

• nonn

Crossrefs

Cf. A068239-A068305, A000332, A002417, A027441, A212208, A212209.

Extensions

a(5)-a(8) from Alois P. Heinz, May 04 2012