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A012959
sech(tan(x)+arcsin(x))=1-4/2!*x^2+56/4!*x^4-1894/6!*x^6+120872/8!*x^8...
0
1, -4, 56, -1894, 120872, -12371994, 1856495604, -384431704934, 104893865610544, -36513587479094898, 15776775677608315084, -8290816621524021595806, 5204162380787016330112520
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..12.
CROSSREFS
Sequence in context:
A243486
A322733
A012983
*
A013113
A009105
A168481
Adjacent sequences:
A012956
A012957
A012958
*
A012960
A012961
A012962
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)