id:A137983 - OEIS Search Results

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G.f.: A(x) = 1/(1 - x*A_0(x)) where A_0(x) = 1/(1 - 2x*A_1(x)^(1/2)) such that A_{n-1}(x) = 1/(1 - 2^n*x*[A_{n}(x)]^(1/2^n)) for n>=1 with A_0(x) equal to the g.f. of A137984.

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1, 1, 3, 13, 71, 469, 3723, 36005, 436547, 6899269, 148118063, 4468393661, 193343082863, 12098043923845, 1095808155971903, 143385496616202557, 27027137980334917335, 7318231233568088061141, 2839533242388092176367563 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`See examples given in A137984.`
	PROGRAM	`(PARI) {a(n)=local(A=1+2^nx+xO(x^n)); for(i=0, n, A=1/(1-2^(n-i)xA^(1/2^(n-i))+x*O(x^n))); polcoeff(A, n)}`
	CROSSREFS	`Cf. A137984.` `Sequence in context: A003319 A000261 A111140 this_sequence A059032 A047159 A086662` `Adjacent sequences: A137980 A137981 A137982 this_sequence A137984 A137985 A137986`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Feb 27 2008`

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

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