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 A192341 #6 Mar 30 2012 18:57:34 %S A192341 1,3,27,1755,6909435,106751109312315,25481781981232427172041948475, %T A192341 1451926371364357751230060437820316313546007023604937430075 %N A192341 Coefficient of x in the reduction of n-th polynomial at A158985 by x^2->x+1. %C A192341 For an introduction to reductions of polynomials by substitutions such as x^2->x+1, see A192232. %e A192341 (See A192340.) %t A192341 (See A192340.) %Y A192341 Cf. A192232, A192340. %K A192341 nonn %O A192341 1,2 %A A192341 _Clark Kimberling_, Jun 28 2011