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A012051 exp(sin(arctanh(x)))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+16/5!*x^5... 0
1, 1, 1, 2, 5, 16, 61, 216, 937, -1280, -34919, -1141504, -13257619, -263392128, -3269873515, -64804059904, -890367567919, -18858549039104, -286428853272143, -6592583427379200, -109915623105978539 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Sequence in context: A210668 A279564 A005036 * A012159 A009736 A307228

Adjacent sequences:  A012048 A012049 A012050 * A012052 A012053 A012054

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified November 28 13:47 EST 2021. Contains 349413 sequences. (Running on oeis4.)