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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
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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 March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)