A068300 - OEIS

%I #8 May 04 2012 15:50:14

%S 1,720,26910720,52288926842880,5281821340632604016640,

%T 27736206226949123988070609059840,

%U 7571810592000511584502349629565976352849920,107458741981038717371365660998262273071288547237109760000

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 24 2002

%E a(5)-a(8) from _Alois P. Heinz_, May 04 2012