id:A118347 - OEIS Search Results

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

+0
4

1, 2, 11, 70, 487, 3592, 27600, 218566, 1771367, 14621410, 122495659, 1038934480, 8903129300, 76970244560, 670507216168, 5879770542870, 51861650744071, 459804626981158, 4095433894576785, 36628711884398086, 328824295880947471 (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)^2, n)}`
	CROSSREFS	`Cf. A118345, A118346, A118348, A118349.` `Sequence in context: A063768 A042245 A135166 this_sequence A047776 A049671 A074609` `Adjacent sequences: A118344 A118345 A118346 this_sequence A118348 A118349 A118350`
	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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