|
| |
|
|
A013454
|
|
cos(tan(x)-tanh(x))=1-160/6!*x^6-261120/10!*x^10+3942400/12!*x^12...
|
|
0
|
|
|
|
1, 0, 0, -160, 0, -261120, 3942400, -1538068480, 111522611200, -25458261360640, 5279051703910400, -1021353507684352000, 440307608869404672000, -89935097031558126632960
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,4
|
|
|
LINKS
|
Table of n, a(n) for n=0..13.
|
|
|
MATHEMATICA
|
With[{nn=30}, Take[CoefficientList[Series[Cos[Tan[x]-Tanh[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Mar 31 2019 *)
|
|
|
CROSSREFS
|
Sequence in context: A263518 A213695 A224430 * A013455 A013465 A013466
Adjacent sequences: A013451 A013452 A013453 * A013455 A013456 A013457
|
|
|
KEYWORD
|
sign
|
|
|
AUTHOR
|
Patrick Demichel (patrick.demichel(AT)hp.com)
|
|
|
STATUS
|
approved
|
| |
|
|
