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A012832 sec(sec(x)*arcsinh(x))=1+1/2!*x^2+13/4!*x^4+445/6!*x^6+24953/8!*x^8... 0
1, 1, 13, 445, 24953, 2394425, 320731013, 61303017269, 15028480222577, 4798610670513265, 1869279471006738045, 898190788867995464109, 509366426382836133377513, 343690844382622422166331305 (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: A260871 A260851 A260852 * A102075 A218586 A251601

Adjacent sequences:  A012829 A012830 A012831 * A012833 A012834 A012835

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified August 27 17:19 EDT 2015. Contains 261095 sequences.