login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A145251
1/8 of the number of 8-colorings of an n X n array symmetric about main diagonal.
0
1, 49, 14749, 27270901, 309747333007, 21611597821416253, 9262695628779625138057, 24387041941030585188110420941, 394413773105599656230374829245322143
OFFSET
1,2
CROSSREFS
Sequence in context: A194023 A195273 A222459 * A202991 A203061 A013741
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 05 2008
STATUS
approved