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A172931
Number of n X 7 0..7 arrays with row sums 7 and column sums n.
2
1, 393, 248137, 200148649, 187403959401, 193953937375521, 215717608046511873, 253310893747894263177, 310323674631037864285609, 393277602707575435993011793, 512421117125922437799936404913
OFFSET
1,2
LINKS
CROSSREFS
Column k=7 of A333901.
Sequence in context: A172813 A172872 A172903 * A172710 A236234 A252691
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved