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A124571
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Expansion of limit b(n)/x^n where b(n)=b(n-1)^2+b(n-1)*x, b(1)=x^2.
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0
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1, 1, 1, 3, 4, 6, 12, 21, 33, 53, 90, 151, 253, 426, 701, 1151, 1900, 3123, 5162, 8553, 14092, 23223, 38296, 62963, 103458, 170056, 279140, 457833, 751033, 1231671, 2019090, 3309710, 5424315, 8886249, 14553015, 23826952, 38997232, 63806394
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OFFSET
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1,4
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LINKS
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PROG
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(PARI) {a(n)=local(A); if(n<1, 0, A=x+x*O(x^n); for(k=0, n-2, A+=A^2*x^k); polcoeff(A, n))}
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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