id:A140915 - OEIS Search Results

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Number of 6 X 8 matrices with elements in 0..n with each row and each column in nondecreasing order. 6,8,n can be permuted, see formula.

+0
1

1, 3003, 2147145, 614083470, 90474964580, 7997986868872, 469699956117392, 19702998159210080, 623055648083552320, 15480536486999030720, 312230512837780450368, 5247874388850386800416 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(empirical) set p,q,r to n,8,6 (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: A145304 A094336 A100896 this_sequence A140928 A090162 A031818` `Adjacent sequences: A140912 A140913 A140914 this_sequence A140916 A140917 A140918`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin rhh(at)cadence.com, Jul 05 2008`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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