id:A132331 - OEIS Search Results

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

+0
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1, 3, 3, 10, 18, 18, 72, 93, 141, 381, 423, 990, 1701, 2304, 4998, 7275, 12960, 21195, 34812, 58860, 90576, 163603, 239445, 413964, 669096, 1017918, 1768608, 2639988, 4383036, 6880680, 10911267, 17411292, 26930250, 43797420, 66324909, 107180772 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`Self-convolution cube of A132330.`
	PROGRAM	`(PARI) {a(n)=local(A=1+xO(x^n)); for(j=0, n-1, A=1+x^(n-j)A^3); polcoeff(A^3, n)}`
	CROSSREFS	`Cf. A132330 (cube-root); A001764; A095830 (variant).` `Sequence in context: A081809 A129885 A024313 this_sequence A077899 A049973 A025519` `Adjacent sequences: A132328 A132329 A132330 this_sequence A132332 A132333 A132334`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Aug 20 2007`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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