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A009452 Expansion of sin(log(1+tan(x))). 0
0, 1, -1, 3, -8, 26, -46, -542, 12272, -196204, 2970284, -46125412, 747689152, -12796612984, 231568711464, -4435090726232, 89781803413632, -1918433012222064, 43187041330469744, -1022364892192828752 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..19.

MATHEMATICA

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

CROSSREFS

Sequence in context: A009392 A130648 A061812 * A206141 A281972 A343553

Adjacent sequences:  A009449 A009450 A009451 * A009453 A009454 A009455

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 October 16 07:07 EDT 2021. Contains 348041 sequences. (Running on oeis4.)