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A140942 Number of 10 X 11 matrices with elements in 0..n with each row and each column in nondecreasing order. 10,11,n can be permuted, see formula. 0
1, 352716, 20734762776, 359423289546776, 2464759032039691296, 8048657076493567752960 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..5.

FORMULA

(empirical) set p,q,r to n,11,10 (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: A172765 A205632 A205334 * A294858 A274900 A284081

Adjacent sequences:  A140939 A140940 A140941 * A140943 A140944 A140945

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 05 2008

STATUS

approved

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Last modified October 27 19:59 EDT 2020. Contains 338036 sequences. (Running on oeis4.)