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A012058 tanh(sin(arctanh(x)))=x-1/3!*x^3+1/5!*x^5-57/7!*x^7-3167/9!*x^9... 0
1, -1, 1, -57, -3167, -362737, -56653791, -11948396137, -3257340575039, -1115453379837153, -468755833785218879, -237209057387611844761, -142289210803187916748959, -99838786688751535495417297 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

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

CROSSREFS

Sequence in context: A226848 A022231 A239823 * A122533 A015259 A218808

Adjacent sequences:  A012055 A012056 A012057 * A012059 A012060 A012061

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified December 2 07:40 EST 2020. Contains 338868 sequences. (Running on oeis4.)