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A024329
Expansion of log(1+log(1+x)^2)/2.
1
0, 0, 1, -3, 5, 10, -116, 126, 6054, -68760, 255336, 3099360, -53045136, 55156608, 10024873104, -175247246160, 693221858736, 29064929199744, -605379922107648, -445102785680256, 264990555297131904, -5736069117714297600
OFFSET
0,4
LINKS
FORMULA
E.g.f. log(1+log(1+x)^2)/2. - Robert Israel, Dec 26 2018
MAPLE
S:= series(log(1+log(1+x)^2)/2, x, 31):
seq(coeff(S, x, n)*n!, n=0..30); # Robert Israel, Dec 26 2018
MATHEMATICA
Log[ 1+Log[ 1+x ]^2 ]/2
CROSSREFS
Cf. A009325.
Sequence in context: A358899 A317338 A305510 * A354517 A354389 A297422
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs, Mar 1997
STATUS
approved