id:A118348 - OEIS Search Results

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Semi-diagonal (two rows below central terms) of pendular triangle A118345, and equal to the self-convolution cube of the central terms (A118346).

+0
4

1, 3, 18, 121, 873, 6606, 51728, 415629, 3407391, 28388847, 239675406, 2045980440, 17629939980, 153142537440, 1339599358944, 11789960853293, 104327344928619, 927627432162129, 8283625668834238, 74259685465582569, 668054892245119353 (list; graph; listen)

	OFFSET	`0,2`
	PROGRAM	`(PARI) {a(n)=polcoeff((serreverse(x(1-2x+sqrt((1-2x)(1-6x)+xO(x^n)))/2/(1-2*x))/x)^3, n)}`
	CROSSREFS	`Cf. A118345, A118346, A118347, A118349.` `Sequence in context: A113328 A009065 A109714 this_sequence A011792 A127188 A074558` `Adjacent sequences: A118345 A118346 A118347 this_sequence A118349 A118350 A118351`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Apr 26 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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