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 A192354 #9 Sep 12 2012 08:30:36 %S A192354 0,1,1,14,27,165,428,2001,6069,25042,82555,319793,1101816,4131009, %T A192354 14567657,53697270,191684283,700312381,2515972324,9149426897, %U A192354 32981059485,119645675898,432046756571,1565346866889,5657752486512,20484930829825 %N A192354 Coefficients of x in the reduction of the polynomial p(n,x)=(1/2)((x+2)^n+(x-2)^n) by x^2->x+1. %C A192354 For an introduction to reductions of polynomials by substitutions such as x^2->x+1, see A192232. %F A192354 Empirical G.f.: x^2*(3*x^2-x+1)/((x^2+3*x+1)*(5*x^2-5*x+1)). [_Colin Barker_, Sep 12 2012] %t A192354 (See A192353.) %Y A192354 Cf. A192232, A192353. %K A192354 nonn %O A192354 1,4 %A A192354 _Clark Kimberling_, Jun 29 2011