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A172919
Number of n X n 0..7 arrays with row sums 7 and column sums 7.
4
1, 1, 8, 666, 381424, 976395820, 8575979362560, 215717608046511873, 13590707419428422843904, 1933216160887575268614599040, 571506744082785127089569166384000
OFFSET
0,3
LINKS
CROSSREFS
Column k=7 of A257493.
Sequence in context: A159621 A015106 A099126 * A286394 A101180 A128875
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved