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A134089 a(n) = [x^n] G(x)^(2^(n+1))/2^n where G(x) satisfies: [x^(n+1)] G(x)^(2^n) = [x^n] G(x)^(2^n) for n>=0 and G(2x) is the g.f. of A134084. 5
1, 2, 8, 84, 2676, 275700, 94775156, 111378681460, 457034829332596, 6660551038769802356, 349287637698829559108724, 66597190541338218944629998708, 46556095585511177615107782087451764 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(n) = A134087(n)/2^n.
PROG
(PARI) {a(n)=local(A=[1], B); for(i=1, n, A=concat(A, 0); B=Vec(Ser(A)^(2^(#A-2))); A[ #A]=(B[ #B-1]-B[ #B])/2^(#A-2)); Vec(Ser(A)^(2^(n+1)))[n+1]/2^n}
CROSSREFS
Sequence in context: A276488 A295764 A261683 * A136647 A306001 A261730
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Oct 26 2007
STATUS
approved

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Last modified May 24 01:38 EDT 2024. Contains 372768 sequences. (Running on oeis4.)