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A307126 Expansion of e.g.f. log(1 + log(1 + x*exp(x))). 1
0, 1, 0, -2, 5, 3, -88, 362, 534, -17363, 103354, 175690, -9218328, 80446715, 46936658, -10553663682, 136009808336, -210505566343, -22766371152222, 418488315816586, -1679396876267976, -82907733267235305, 2070045795782097506, -13611715282931011890, -463120892871268874832 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..24.

MAPLE

a:=series(log(1+log(1+x*exp(x))), x=0, 25): seq(n!*coeff(a, x, n), n=0..24); # Paolo P. Lava, Apr 03 2019

MATHEMATICA

nmax = 24; CoefficientList[Series[Log[1 + Log[1 + x Exp[x]]], {x, 0, nmax}], x] Range[0, nmax]!

PROG

(PARI) my(x = 'x + O('x^30)); Vec(serlaplace(log(1 + log(1 + x*exp(x))))) \\ Michel Marcus, Mar 26 2019

CROSSREFS

Cf. A003713, A007550, A009306, A307125.

Sequence in context: A109734 A239309 A077073 * A191474 A199602 A324057

Adjacent sequences:  A307123 A307124 A307125 * A307127 A307128 A307129

KEYWORD

sign

AUTHOR

Ilya Gutkovskiy, Mar 26 2019

STATUS

approved

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Last modified May 19 13:24 EDT 2022. Contains 353833 sequences. (Running on oeis4.)