A068300 1/11 the number of colorings of an n X n octagonal array with 11 colors.

1, 720, 26910720, 52288926842880, 5281821340632604016640, 27736206226949123988070609059840, 7571810592000511584502349629565976352849920, 107458741981038717371365660998262273071288547237109760000

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