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A140940
Number of 8 X 11 matrices with elements in 0..n with each row and each column in nondecreasing order. 8,11,n can be permuted, see formula.
0
1, 75582, 1057896060, 4783805983320, 9271015995674160, 9183250377581777952, 5247874388850386800416
OFFSET
0,2
FORMULA
(empirical) set p,q,r to n,11,8 (in any order) in s=p+q+r-1; a(n) = product {i in 0..r-1} (binomial(s,p+i)*i!/(s-i)^(r-i-1))
CROSSREFS
Sequence in context: A347848 A204360 A236817 * A204865 A323025 A323804
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 05 2008
STATUS
approved