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A009143 Expansion of cosh(sin(tan(x))). 0
1, 1, 5, 13, -2199, -218311, -20057555, -1933691003, -181405779887, -10159446470927, 2835996855537109, 1885678632476987261, 824453354251620790969, 331368644928193180404521, 128606636719913204236509949 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..14.

MATHEMATICA

Cosh[ Sin[ Tan[ x ] ] ] (* Even Part *)

CROSSREFS

Sequence in context: A121228 A201260 A012173 * A240765 A127317 A049506

Adjacent sequences:  A009140 A009141 A009142 * A009144 A009145 A009146

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified May 23 12:45 EDT 2017. Contains 286915 sequences.