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A013146 sinh(tanh(x)+arctan(x))=2*x+4/3!*x^3-88/5!*x^5+2496/7!*x^7... 0
2, 4, -88, 2496, -106624, 6875136, -673392640, 99550288896, -21279326830592, 6159283224084480, -2276409633583071232, 1031635526526543462400, -558671488143239984709632, 355396466132997594824048640 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..13.

CROSSREFS

Sequence in context: A259137 A009217 A015170 * A116310 A009277 A018410

Adjacent sequences:  A013143 A013144 A013145 * A013147 A013148 A013149

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified August 4 10:11 EDT 2021. Contains 346447 sequences. (Running on oeis4.)