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A172636
Number of n X 7 0..2 arrays with row sums 7 and column sums n.
2
1, 393, 35617, 7343449, 1509893001, 360255871641, 91358224634433, 24567498558526617, 6887820148172502169, 1998635481349606292593, 596268326872362183077193, 182062424087215419645579529
OFFSET
1,2
LINKS
CROSSREFS
Column k=7 of A334549.
Sequence in context: A227942 A201815 A201554 * A202046 A172737 A172813
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved