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Search: id:A012152
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A012152 arctanh(tan(tan(x)))=x+6/3!*x^3+176/5!*x^5+12240/7!*x^7... +0
1
1, 6, 176, 12240, 1561088, 318007808, 94807748608, 38942692972544, 21088169713729536, 14558790290337431552, 12481351528273319821312, 13009249833253480856289280, 16200881782506627598590672896 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A024277 A012177 A012227 this_sequence A165928 A024278 A062240

Adjacent sequences: A012149 A012150 A012151 this_sequence A012153 A012154 A012155

KEYWORD

nonn

AUTHOR

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

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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