id:A140939 - OEIS Search Results

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Number of 7 X 11 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,11,n can be permuted, see formula.

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1, 31824, 200443464, 431621592480, 418241323113120, 216147115784860416, 66906538465238667936, 13494534142758137486784 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(empirical) set p,q,r to n,11,7 (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: A151815 A113846 A154471 this_sequence A134124 A054038 A156977` `Adjacent sequences: A140936 A140937 A140938 this_sequence A140940 A140941 A140942`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin rhh(at)cadence.com, Jul 05 2008`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.