id:A098465 - OEIS Search Results

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Expansion of (sqrt(1+3x)-sqrt(1-5x))/(4x*sqrt(1-x)).

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1, 1, 3, 7, 27, 91, 373, 1457, 6163, 25795, 111897, 486421, 2153429, 9584901, 43121211, 195082479, 888861555, 4069956979, 18732710281, 86579713685, 401776434017, 1870946532705, 8740907398527, 40956105551603 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Binomial transform of A048990 (with interpolated zeros).`
	FORMULA	`a(n)=sum{k=0..n, Binomial(n, k)C(k)(1+(-1)^k)/2}`
	CROSSREFS	`Cf. A000108.` `Sequence in context: A019059 A056257 A066021 this_sequence A081562 A003083 A062795` `Adjacent sequences: A098462 A098463 A098464 this_sequence A098466 A098467 A098468`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 09 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research