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A068300
1/11 the number of colorings of an n X n octagonal array with 11 colors.
1
1, 720, 26910720, 52288926842880, 5281821340632604016640, 27736206226949123988070609059840, 7571810592000511584502349629565976352849920, 107458741981038717371365660998262273071288547237109760000
OFFSET
1,2
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2002
EXTENSIONS
a(5)-a(8) from Alois P. Heinz, May 04 2012
STATUS
approved