A135869 - OEIS

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A135869

G.f. A(x) = 1 + x*A(3x)^2.

1, 1, 6, 117, 6642, 1097874, 537135948, 784812995973, 3435153688724346, 45086429284345043334, 1775007791598340247784372, 209630197234751724563143145346, 74271350069687203431923556331222068 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Self-convolution equals A135870.`
	PROG	`(PARI) {a(n)=local(A=1+x+xO(x^n)); for(i=0, n, A=1+xsubst(A, x, 3*x)^2); polcoeff(A, n)}`
	CROSSREFS	`Cf. A135867, A135870.` `Sequence in context: A113015 A024275 A100070 * A054957 A081537 A127726` `Adjacent sequences: A135866 A135867 A135868 * A135870 A135871 A135872`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 02 2007`

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.