id:A098582 - OEIS Search Results

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Expansion of (1+2x+4x^2+8x^3)/(1-x-16x^5).

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1, 3, 7, 15, 15, 31, 79, 191, 431, 671, 1167, 2431, 5487, 12383, 23119, 41791, 80687, 168479, 366607, 736511, 1405167, 2696159, 5391823, 11257535, 23041711, 45524383, 88662927, 174932095, 355052655, 723720031, 1452110159, 2870716991 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=a(n-1)+16a(n-5); a(n)=sum{k=0..n, binomial(n-k, floor(k/4))2^k}.`
	CROSSREFS	`Sequence in context: A135374 A117589 A143703 this_sequence A089432 A111294 A092899` `Adjacent sequences: A098579 A098580 A098581 this_sequence A098583 A098584 A098585`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 16 2004`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research