login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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; internal format)
OFFSET

0,3

MATHEMATICA

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

CROSSREFS

Sequence in context: A121228 A201260 A012173 * A127317 A049506 A069524

Adjacent sequences:  A009140 A009141 A009142 * A009144 A009145 A009146

KEYWORD

sign

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 19:13 EST 2012. Contains 206085 sequences.