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A024291
Expansion of tan(x)*sinh(tan(x))/2.
0
0, 1, 10, 219, 8340, 486517, 40126366, 4429823055, 629201874216, 111601138953193, 24147604588944178, 6255175324250099907, 1910034333745099017660, 678640902986234659254877
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..13.
MATHEMATICA
Tan[ x ]*Sinh[ Tan[ x ] ]/2 (* Even Part *)
CROSSREFS
A009746
.
Sequence in context:
A326208
A007698
A007699
*
A024292
A094420
A053131
Adjacent sequences:
A024288
A024289
A024290
*
A024292
A024293
A024294
KEYWORD
nonn
AUTHOR
R. H. Hardin
EXTENSIONS
Extended and signs tested 03/97.
STATUS
approved
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Last modified April 24 13:19 EDT 2024. Contains 371953 sequences. (Running on oeis4.)