id:A134048 - OEIS Search Results

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a(n) = [x^n] G(x)^( 2^(n+2) ) / 4^n, where G(x) is the g.f. of A134046 such that G(x) satisfies: [x^n] G(x)^(2^n) = 4^n for n>=0.

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1, 4, 28, 548, 35108, 7507972, 5383397764, 13122109416964, 110735166982705668, 3291956693540520243204, 349880644048154072353961988, 134569675810924626719483447943172 (list; graph; listen)

	OFFSET	`0,2`
	PROGRAM	`(PARI) {a(n)=local(A=[]); for(i=0, n, A=concat(A, 0); A[i+1]=(4^i - Vec(Ser(A)^(2^i))[i+1])/2^i); Vec(Ser(A)^(2^(n+2)))[n+1]/4^n}`
	CROSSREFS	`Cf. A134046, A134047.` `Sequence in context: A132685 A086812 A111817 this_sequence A091969 A101346 A120604` `Adjacent sequences: A134045 A134046 A134047 this_sequence A134049 A134050 A134051`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Oct 25 2007`

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Last modified December 4 21:35 EST 2008. Contains 151309 sequences.

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