id:A140905 - OEIS Search Results

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Number of 5 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 5,6,n can be permuted, see formula.

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1, 462, 60984, 3737448, 133613766, 3184461423, 55197331332, 739309710568, 7997986868872, 72261531710368, 559611782036736, 3792054662892288, 22861714169552544, 124317036213845112, 616710003178486536, 2817836469631320060, 11955449108123596075 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(empirical) set p,q,r to n,6,5 (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: A023912 A027565 A035847 this_sequence A025038 A028684 A102997` `Adjacent sequences: A140902 A140903 A140904 this_sequence A140906 A140907 A140908`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin rhh(at)cadence.com, Jul 05 2008`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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