id:A140932 - OEIS Search Results

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Number of 9 X 10 matrices with elements in 0..n with each row and each column in nondecreasing order. 9,10,n can be permuted, see formula.

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1, 92378, 1551580888, 8291930371088, 18748054569029968, 21427584214357481888 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(empirical) set p,q,r to n,10,9 (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: A116097 A116122 A116134 this_sequence A025042 A023945 A128277` `Adjacent sequences: A140929 A140930 A140931 this_sequence A140933 A140934 A140935`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin rhh(at)cadence.com, Jul 05 2008`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.