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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A009542 Expansion of e.g.f. sin(x)*exp(sinh(x)). 1
0, 1, 2, 2, 4, 16, 38, 104, 456, 1600, 6154, 29952, 131660, 644736, 3516334, 18383616, 106736272, 645554176, 3902982930, 25645936640, 170222268308, 1160636121088, 8352824699446, 60217271582720, 450765801976408 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

First negative term is a(35). - Olivier Gérard, Mar 15 1997

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..200

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Sin[x]*Exp[Sinh[x]], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, May 21 2019 *)

PROG

(PARI) my(x='x+O('x^40)); Vec(serlaplace(sin(x)*exp(sinh(x)))) \\ Michel Marcus, Apr 02 2017

CROSSREFS

Sequence in context: A154003 A291338 A326481 * A244108 A032318 A090753

Adjacent sequences:  A009539 A009540 A009541 * A009543 A009544 A009545

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 21 2019

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 September 21 15:09 EDT 2019. Contains 327270 sequences. (Running on oeis4.)