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Search: id:A012452
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A012452 arctanh(atan(x)*tan(x))=2/2!*x^2+400/6!*x^6-2688/8!*x^8... +0
1
2, 0, 400, -2688, 1873408, -60938240, 49450805248, -4291105193984, 4345356280528896, -769792296435580928, 962815994229666349056, -298377426990773724774400, 452668537171760533299265536 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Adjacent sequences: A012449 A012450 A012451 this_sequence A012453 A012454 A012455

Sequence in context: A012449 A012446 A012755 this_sequence A013417 A013418 A114630

KEYWORD

sign

AUTHOR

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

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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