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A013512
arctanh(sec(x)-sech(x))=2/2!*x^2+362/6!*x^6+1441682/10!*x^10...
0
2, 362, 1441682, 32555086202, 2447023018597922, 462534850269339720842, 184789477601927787169878962, 138612178386831070025588251376282, 179134512141830902349787461672276596802
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Table of n, a(n) for n=0..8.
CROSSREFS
Sequence in context: A372992 A077350 A013506 * A295174 A320445 A142532
Adjacent sequences: A013509 A013510 A013511 * A013513 A013514 A013515
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
More terms from Max Alekseyev, Feb 06 2010
STATUS
approved

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Last modified September 28 19:06 EDT 2024. Contains 376297 sequences.
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