id:A097336 - OEIS Search Results

Search: id:A097336

Displaying 1-1 of 1 results found.

page 1

Sum k=0..n, C(n-k, floor(k/2))4^k.

+0
2

1, 5, 5, 21, 101, 181, 517, 2133, 5029, 13301, 47429, 127893, 340709, 1099573, 3145861, 8597205, 26190373, 76524149, 214079429, 633125397, 1857511781, 5282782645, 15412788997, 45132977493, 129657499813, 376262123765 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`The sequence sum{k=0..n, C(n-k,floor(k/2))r^k} has g.f. (1+rx)/(1-x-r^2x^3).`
	FORMULA	`G.f. : (1+4x)/(1-x-16x^3); a(n)=a(n-1)+16a(n-3).`
	CROSSREFS	`Cf. A097333, A097334, A097335.` `Adjacent sequences: A097333 A097334 A097335 this_sequence A097337 A097338 A097339` `Sequence in context: A116400 A052992 A007028 this_sequence A014619 A097016 A090936`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Aug 05 2004`

page 1

Search completed in 0.002 seconds

Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.

AT&T Labs Research