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A145261
1/10 of the number of 10-colorings of an n X n array symmetric about main diagonal.
0
1, 81, 53217, 283593393, 12258075782601, 4297629494449269153, 12221263772988733500680961, 281892642133040615422671776068833, 52738993750936114896985550720064788375625
OFFSET
1,2
CROSSREFS
Sequence in context: A088188 A017560 A128493 * A013745 A093227 A187751
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 05 2008
STATUS
approved