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A012157 sec(tan(sinh(x)))=1+1/2!*x^2+17/4!*x^4+673/6!*x^6+48929/8!*x^8... 0
1, 1, 17, 673, 48929, 5673089, 961574833, 224363899425, 68975480890433, 27023130631305217, 13143522467110047569, 7770835407698957687457, 5488724780305016514749281, 4564763996367746354642156161 (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: A118769 A009158 A012050 * A012137 A171198 A309410

Adjacent sequences:  A012154 A012155 A012156 * A012158 A012159 A012160

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

More terms from N. J. A. Sloane, Aug 27 2006

STATUS

approved

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Last modified July 28 13:15 EDT 2021. Contains 346332 sequences. (Running on oeis4.)