A012650 - OEIS

%I #9 Feb 27 2023 13:26:45

%S 0,0,2,-3,0,-10,40,504,-2352,-4824,-182912,3899720,-27876640,

%T 234373776,-5435914640,91625675400,-1149581257216,18172484297792,

%U -366469643887104,6826755069373824,-123759250799610112

%N Expansion of e.g.f. sin(tanh(x) * log(x+1)).

%p 2/2!*x^2 - 3/3!*x^3 - 10/5!*x^5 + 40/6!*x^6 ...

%t With[{nn=20},CoefficientList[Series[Sin[Tanh[x]Log[x+1]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Feb 27 2023 *)

%K sign

%O 0,3

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

%E a(0) and a(1) inserted and title improved by _Sean A. Irvine_, Jul 23 2018