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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A009174 Expansion of e.g.f.: cosh(x)*cos(log(1+x)). 0
1, 0, 0, 3, -15, 70, -354, 1995, -12667, 89892, -705244, 6042575, -55837075, 548985138, -5650236630, 59493168735, -615581655639, 5683518687560, -30016869620472, -587400084741573, 31322604753002761, -1006072267431660450 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..21.

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Cosh[x]*Cos[Log[1+x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 09 2015 *)

CROSSREFS

Sequence in context: A245751 A033876 A291031 * A178345 A183547 A123942

Adjacent sequences:  A009171 A009172 A009173 * A009175 A009176 A009177

KEYWORD

sign,easy

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

Previous Mathematica program replaced by Harvey P. Dale, May 09 2015

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 23:50 EDT 2019. Contains 328103 sequences. (Running on oeis4.)