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Search: id:A012391
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A012391 arcsinh(tan(x)*tan(x))=2/2!*x^2+16/4!*x^4+152/6!*x^6-5504/8!*x^8... +0
2
2, 16, 152, -5504, -865888, -49313024, 10192998272, 4634262163456, 729893872005632, -280859292338008064, -286057930617679095808, -94104910901654903619584, 51677977224364973979901952 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A103885 A124578 A085510 this_sequence A012387 A009518 A052674

Adjacent sequences: A012388 A012389 A012390 this_sequence A012392 A012393 A012394

KEYWORD

sign

AUTHOR

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

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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