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Search: id:A012459
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A012459 arctan(atan(x)*atan(x))=2/2!*x^2-16/4!*x^4+128/6!*x^6+9984/8!*x^8... +0
1
2, -16, 128, 9984, -1444608, 105185280, 11495516160, -7997802086400, 2106956324536320, 3592879276032000, -400446184903952302080, 271017181684548910448640, -56861458491339484126248960 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A069868 A022027 A013730 this_sequence A012463 A037517 A037720

Adjacent sequences: A012456 A012457 A012458 this_sequence A012460 A012461 A012462

KEYWORD

sign

AUTHOR

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

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Last modified July 4 18:25 EDT 2008. Contains 140886 sequences.

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