id:A132333 - OEIS Search Results

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G.f.: A(x) = (A_1)^2 where A_1 = 1/[1 - x*(A_2)^2], A_2 = 1/[1 - x^2*(A_3)^2], A_3 = 1/[1 - x^3*(A_4)^2], ... A_n = 1/[1 - x^n*(A_{n+1})^2] for n>=1.

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1, 2, 3, 8, 17, 36, 85, 184, 405, 898, 1962, 4296, 9371, 20376, 44244, 95844, 207217, 447264, 963835, 2073900, 4456374, 9563620, 20499344, 43891176, 93877423, 200594560, 428231448, 913400192, 1946652868, 4145533218, 8821743618 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Self-convolution of A132332.`
	PROGRAM	`(PARI) {a(n)=local(A=1+xO(x^n)); for(j=0, n-1, A=1/(1-x^(n-j)A^2 +x*O(x^n))); polcoeff(A^2, n)}`
	CROSSREFS	`Cf. A132332; A132335 (variant).` `Sequence in context: A102008 A158921 A064954 this_sequence A099965 A148014 A148015` `Adjacent sequences: A132330 A132331 A132332 this_sequence A132334 A132335 A132336`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Aug 20 2007`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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