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A012993 arctanh(atan(x)+arcsin(x))=2*x+15/3!*x^3+721/5!*x^5+84049/7!*x^7... 0
2, 15, 721, 84049, 18372769, 6443708601, 3315504514305, 2351891535306609, 2200048869778398657, 2623946039095984617321, 3886333930223496753553953, 6998154777889427559892675041 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

CROSSREFS

Sequence in context: A013064 A013095 A038017 * A179432 A007542 A090604

Adjacent sequences:  A012990 A012991 A012992 * A012994 A012995 A012996

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.