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Search: id:A136509
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A136509 G.f.: A(x) = Sum_{n>=0} (-1)^n * (1 -x -2^n*x^2)^(-1) * log(1 -x -2^n*x^2)^n / n!. +0
3
1, 2, 6, 16, 50, 171, 697, 3416, 21126, 169105, 1794683, 25891713, 507686588, 13878639286, 518836271475, 27356839451662, 1968958300103603, 200935638262212462, 27892630019328034846, 5502857784211927305980 (list; graph; listen)
OFFSET

0,2

PROGRAM

(PARI) {a(n)=polcoeff(sum(i=0, n, (-1)^i*1/(1-x*(1+2^i*x +x*O(x^n)))*log(1-x-2^i*x^2 +x*O(x^n))^i/i!), n)}

CROSSREFS

Cf. A136508; A136507.

Sequence in context: A000136 A013989 A002841 this_sequence A100664 A003446 A045696

Adjacent sequences: A136506 A136507 A136508 this_sequence A136510 A136511 A136512

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Jan 01 2008

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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