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A172953
Number of n X n 0..9 arrays with row sums 15 and column sums 15.
1
0, 4, 3079, 59930080, 11745341072931, 17491353277138361640, 159265228322047609940846213, 7444077333816868635568524618503936, 1543634978788620301563132446180065043318640
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A349074 A347605 A306728 * A132639 A132643 A079193
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved