A012058 tanh(sin(arctanh(x)))=x-1/3!*x^3+1/5!*x^5-57/7!*x^7-3167/9!*x^9...

1, -1, 1, -57, -3167, -362737, -56653791, -11948396137, -3257340575039, -1115453379837153, -468755833785218879, -237209057387611844761, -142289210803187916748959, -99838786688751535495417297

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