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

0,2
CROSSREFS

Sequence in context: A142294 A159546 A012215 this_sequence A012207 A134766 A122911

Adjacent sequences: A012139 A012140 A012141 this_sequence A012143 A012144 A012145

KEYWORD

nonn

AUTHOR

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

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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