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A172903
Number of n X 7 0..6 arrays with row sums 7 and column sums n
1
1, 393, 248137, 200148649, 187403959401, 193953937375521, 215298243454580553, 252150480931735527177, 307972094130678784570009, 389031356288581849014042193, 505162253803288598888223487713
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A172737 A172813 A172872 * A172931 A172710 A236234
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved