This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A296336 #18 Mar 27 2019 10:03:50
%S A296336 0,1,1,-1,0,-16,-5,13,-1512,12336,-98177,444773,1249160,-75244508,
%T A296336 1296229779,-15956614403,130892534160,59122803744,-31478991643617,
%U A296336 837166840532589,-14900078660739984,181343532181629332,-480411914937891389,-54306065912649098539,2080183542455901881320
%N A296336 Expansion of e.g.f. log(1 + x*cos(x))*exp(x).
%e A296336 log(1 + x*cos(x))*exp(x) = x/1! + x^2/2! - x^3/3! - 16*x^5/5! - 5*x^6/6! + ...
%p A296336 a:=series(log(1 + x*cos(x))*exp(x),x=0,25): seq(n!*coeff(a,x,n),n=0..24); # _Paolo P. Lava_, Mar 27 2019
%t A296336 nmax = 24; CoefficientList[Series[Log[1 + x Cos[x]] Exp[x], {x, 0, nmax}], x] Range[0, nmax]!
%o A296336 (PARI) x='x+O('x^99); concat([0], Vec(serlaplace(exp(x)*log(1+x*cos(x))))) \\ _Altug Alkan_, Dec 28 2017
%Y A296336 Cf. A003728, A009334, A009371, A294314, A295278, A296436, A296438, A297206.
%K A296336 sign
%O A296336 0,6
%A A296336 _Ilya Gutkovskiy_, Dec 27 2017