id:A126453 - OEIS Search Results

Search: id:A126453

Displaying 1-1 of 1 results found.

page 1

Row sums of triangle A126450: a(n) = Sum_{k=0..n} C( C(n+2,3) - C(k+2,3) + 1, n-k).

+0
4

1, 3, 15, 218, 7273, 434654, 40417797, 5369210845, 962496995941, 223528473482380, 65221305164439085, 23343099723197369886, 10052235133879615066675, 5126300310101866339983229 (list; graph; listen)

	OFFSET	`0,2`
	PROGRAM	`(PARI) a(n)=sum(k=0, n, binomial(binomial(n+2, 3)-binomial(k+2, 3)+1, n-k))`
	CROSSREFS	`Cf. A126450; A126451, A126452.` `Sequence in context: A120601 A145272 A117820 this_sequence A007081 A126455 A136466` `Adjacent sequences: A126450 A126451 A126452 this_sequence A126454 A126455 A126456`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 27 2006`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research