login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A013068 Expansion of e.g.f. log(sinh(x) + cos(x)). 3
0, 1, -2, 6, -24, 140, -992, 8456, -84224, 957840, -12257792, 174293856, -2726068224, 46514037440, -859790139392, 17115342333056, -365041325441024, 8304761365213440, -200743379109281792 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Muniru A Asiru, Table of n, a(n) for n = 0..100

EXAMPLE

x - 2/2!*x^2 + 6/3!*x^3 - 24/4!*x^4 + 140/5!*x^5 ...

MAPLE

seq(coeff(series(factorial(n)*log(sinh(x)+cos(x)), x, n+1), x, n), n=0..20); # Muniru A Asiru, Jul 30 2018

PROG

(PARI) x = 'x + O('x^30); concat([0], Vec(serlaplace(log(sinh(x) + cos(x))))) \\ Michel Marcus, Jul 30 2018

CROSSREFS

Sequence in context: A129101 A292907 A216507 * A205182 A326780 A258325

Adjacent sequences:  A013065 A013066 A013067 * A013069 A013070 A013071

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

EXTENSIONS

a(0)=0 inserted and title improved by Sean A. Irvine, Jul 30 2018

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 April 10 02:00 EDT 2020. Contains 333392 sequences. (Running on oeis4.)