A068297 1/8 the number of colorings of an n X n octagonal array with 8 colors.

1, 210, 813750, 58494843750, 77998664766618750, 1929292299321647690193750, 885215793907124317300191394818750, 7534251364260636630211044759506294857668750

Offset

1,2

Links

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

Crossrefs

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

Sequence in context: A229671 A134236 A136350 * A196887 A028677 A114442

Adjacent sequences: A068294 A068295 A068296 * A068298 A068299 A068300

Keyword

nonn

Author

R. H. Hardin, Feb 24 2002

Extensions

a(6)-a(8) from Alois P. Heinz, May 04 2012

Status

approved