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A012142 arctanh(arcsin(atanh(x)))=x+5/3!*x^3+137/5!*x^5+9085/7!*x^7... 0
1, 5, 137, 9085, 1107665, 215251189, 61040810841, 23787478734573, 12195876997744289, 7959108767371738085, 6442333032874852024617, 6333998826435424439107165, 7435387461759207059826574193 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A142294 A159546 A012215 * A012207 A192640 A192641

Adjacent sequences:  A012139 A012140 A012141 * A012143 A012144 A012145

KEYWORD

nonn

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.