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A009656 Expansion of tan(sin(log(1+x))). 0
0, 1, -1, 3, -12, 56, -300, 1712, -9296, 31580, 332820, -12153628, 262379568, -5078814272, 95841606224, -1814643998048, 34867500286080, -682633762485424, 13618529773949232, -276121278370253456, 5659794902282891840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..20.

MATHEMATICA

Tan[ Sin[ Log[ 1+x ] ] ]

CROSSREFS

Sequence in context: A180256 A027390 A009499 * A020016 A001277 A192525

Adjacent sequences:  A009653 A009654 A009655 * A009657 A009658 A009659

KEYWORD

sign,easy

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified March 22 12:43 EDT 2019. Contains 321421 sequences. (Running on oeis4.)