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A012060 cosh(sin(arctanh(x)))=1+1/2!*x^2+5/4!*x^4+61/6!*x^6+937/8!*x^8... 0
1, 1, 5, 61, 937, -34919, -13257619, -3269873515, -890367567919, -286428853272143, -109915623105978539, -50081947723080008339, -26861824093922170259335, -16800404374717805427318199 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

CROSSREFS

Sequence in context: A217280 A236955 A064328 * A012167 A162167 A134282

Adjacent sequences:  A012057 A012058 A012059 * A012061 A012062 A012063

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified September 22 06:08 EDT 2020. Contains 337289 sequences. (Running on oeis4.)