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 A192358 #7 Nov 22 2012 08:13:48 %S A192358 0,1,1,29,57,590,1628,11731,39459,236797,899155,4863068,19903896, %T A192358 101199149,433857437,2124952045,9374498133,44879983186,201514230964, %U A192358 951385817327,4318344961935,20214336758573,92366228744351,430111736709904 %N A192358 Coefficients of x in the reduction of the polynomial p(n,x)=(1/2)((x+3)^n+(x-3)^n) by x^2->x+1. %C A192358 For an introduction to reductions of polynomials by substitutions such as x^2->x+1, see A192232. %F A192358 Conjecture: a(n) = 2*a(n-1)+19*a(n-2)-20*a(n-3)-55*a(n-4). G.f.: x^2*(8*x^2-x+1)/((5*x^2+5*x+1)*(11*x^2-7*x+1)). [_Colin Barker_, Nov 22 2012] %t A192358 (See A192357.) %Y A192358 Cf. A192232, A192357. %K A192358 nonn %O A192358 1,4 %A A192358 _Clark Kimberling_, Jun 29 2011