A140942 - OEIS

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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.

1, 352716, 20734762776, 359423289546776, 2464759032039691296, 8048657076493567752960 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	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 * A050515 A179709 A186217` `Adjacent sequences: A140939 A140940 A140941 * A140943 A140944 A140945`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin rhh(at)cadence.com, Jul 05 2008`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.