id:A140914 - OEIS Search Results

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Number of 5 X 8 matrices with elements in 0..n with each row and each column in nondecreasing order. 5,8,n can be permuted, see formula.

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1, 1287, 429429, 61408347, 4789851066, 235234907908, 7997986868872, 201299981193168, 3940599631842016, 62305564808355232, 819557814017595744, 9183250377581777952, 89360090212622685456, 767243308499780749560, 5890437072025627650100 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(empirical) set p,q,r to n,8,5 (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: A090006 A084803 A104399 this_sequence A020401 A106816 A137714` `Adjacent sequences: A140911 A140912 A140913 this_sequence A140915 A140916 A140917`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin rhh(at)cadence.com, Jul 05 2008`

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

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