login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Expansion of e.g.f. tan(sinh(sin(x))), odd powers only.
1

%I #22 Feb 09 2014 12:53:32

%S 1,2,8,-8,-4096,-184064,-6462336,141778176,56652931072,7990288265216,

%T 604515399630848,-52091469346013184,-36361552578811101184,

%U -9602033551463759937536,-1234912222481784889933824

%N Expansion of e.g.f. tan(sinh(sin(x))), odd powers only.

%H Vincenzo Librandi, <a href="/A009677/b009677.txt">Table of n, a(n) for n = 0..100</a>

%t With[{nn=30},Take[CoefficientList[Series[Tan[Sinh[Sin[x]]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Aug 06 2013 *)

%K sign

%O 0,2

%A _R. H. Hardin_

%E Extended with signs by _Olivier Gérard_, Mar 15 1997

%E Previous Mathematica program replaced by _Harvey P. Dale_, Aug 06 2013

%E Clarified definition, _Joerg Arndt_, Feb 09 2014