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A012504 tanh(cos(x)*arctan(x))=x-7/3!*x^3+165/5!*x^5-9931/7!*x^7... 0
1, -7, 165, -9931, 1037033, -167246319, 38489315917, -11958291252467, 4819985549046353, -2445005516326951767, 1523950240372673482357, -1144729097700954584840347, 1019812687197159075947289145 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A184754 A160241 A020998 * A012689 A098632 A192275

Adjacent sequences:  A012501 A012502 A012503 * A012505 A012506 A012507

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified July 30 07:58 EDT 2021. Contains 346348 sequences. (Running on oeis4.)