A145246 1/6 of the number of 6-colorings of an n X n array symmetric about main diagonal.

1, 25, 2625, 1157625, 2144197125, 16680941258625, 545049010783958625, 74801401778343775334625, 43116460181763524110077949125, 104384410248808682805556599342377625

Offset

1,2

Links

Table of n, a(n) for n=1..10.

Crossrefs

Sequence in context: A324417 A167036 A342107 * A082488 A363865 A209850

Adjacent sequences: A145243 A145244 A145245 * A145247 A145248 A145249

Keyword

nonn

Author

R. H. Hardin, Oct 05 2008

Status

approved