id:A107066 - OEIS Search Results

Search: id:A107066

Displaying 1-1 of 1 results found.

page 1

Expansion of 1/(1-2x+x^5).

+0
3

1, 2, 4, 8, 16, 31, 60, 116, 224, 432, 833, 1606, 3096, 5968, 11504, 22175, 42744, 82392, 158816, 306128, 590081, 1137418, 2192444, 4226072, 8146016, 15701951, 30266484, 58340524, 112454976, 216763936, 417825921 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Row sums of number triangle A107065.`
	FORMULA	`a(n)=2a(n-1)-a(n-5); a(n)=sum{k=0..floor(n/5), binomial(n-4k, k)2^(n-2k)(-1)^k}.` `a(n) = A018922(n-3) for n>=3. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 09 2007`
	CROSSREFS	`Cf. A018922.` `Sequence in context: A007800 A102726 A118891 this_sequence A141019 A152718 A006775` `Adjacent sequences: A107063 A107064 A107065 this_sequence A107067 A107068 A107069`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 10 2005`

page 1

Search completed in 0.002 seconds

Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

AT&T Labs Research