A012504 tanh(cos(x)*arctan(x))=x-7/3!*x^3+165/5!*x^5-9931/7!*x^7...

1, -7, 165, -9931, 1037033, -167246319, 38489315917, -11958291252467, 4819985549046353, -2445005516326951767, 1523950240372673482357, -1144729097700954584840347, 1019812687197159075947289145

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