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A013054 sec(sinh(x)+tan(x))=1+4/2!*x^2+104/4!*x^4+6598/6!*x^6+778200/8!*x^8... 0
1, 4, 104, 6598, 778200, 147293306, 40870375036, 15634022134518, 7885949713950992, 5071562424714844978, 4050326064394675777988, 3932747393021585152266894, 4562459896809464230996563288 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A326284 A302733 A098696 * A024262 A012958 A012984

Adjacent sequences:  A013051 A013052 A013053 * A013055 A013056 A013057

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified February 18 21:20 EST 2020. Contains 332028 sequences. (Running on oeis4.)