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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..6.

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: A182393 A204360 A236817 * A204865 A323025 A323804

Adjacent sequences:  A140937 A140938 A140939 * A140941 A140942 A140943

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 05 2008

STATUS

approved

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Last modified October 27 09:08 EDT 2020. Contains 338035 sequences. (Running on oeis4.)