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Search: id:A013142
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A013142 arcsin(tanh(x)+arctan(x))=2*x+4/3!*x^3+168/5!*x^5+13248/7!*x^7... +0
1
2, 4, 168, 13248, 2226048, 599902208, 243130652672, 137141067373568, 103018549675327488, 99335294756500832256, 119626550900969898049536, 175950984763936427137433600, 310396731889156481163306991616 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A132528 A018573 A018583 this_sequence A023171 A018595 A009553

Adjacent sequences: A013139 A013140 A013141 this_sequence A013143 A013144 A013145

KEYWORD

nonn

AUTHOR

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

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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