id:A140927 - OEIS Search Results

Search: id:A140927

Displaying 1-1 of 1 results found.

page 1

Number of 4 X 10 matrices with elements in 0..n with each row and each column in nondecreasing order. 4,10,n can be permuted, see formula.

+0
1

1, 1001, 273273, 33157124, 2254684432, 98561919456, 3031952379456, 69951472754592, 1268665346776464, 18748054569029968, 232187445047217296, 2464759032039691296, 22841906047840362560, 187629942535831549600, 1383573735925984746000, 9257736027151809697500 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(empirical) set p,q,r to n,10,4 (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: A130600 A114387 A109431 this_sequence A097659 A143906 A139105` `Adjacent sequences: A140924 A140925 A140926 this_sequence A140928 A140929 A140930`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin rhh(at)cadence.com, Jul 05 2008`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research