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 A061182 #3 Mar 31 2012 13:20:05 %S A061182 3,22,111,474,1836,6666,23109,77378,252177,804228,2519640,7777860, %T A061182 23709783,71501422,213619683,633011454,1862264196,5443487406, %U A061182 15820188729,45739697306,131624104677,377157259848 %N A061182 Third column (m=2) of triangle A060921 (bisection of Fibonacci triangle, odd part). %C A061182 Numerator polynomial is sum(A061177(2,m)*x^m,m=0..2). %F A061182 a(n)= A060921(n+2, 2). %F A061182 G.f.: (3*(1+x^2)-5*x)/(1-3*x+x^2)^3. %Y A061182 A001906, 2*A001870. %K A061182 nonn,easy %O A061182 0,1 %A A061182 _Wolfdieter Lang_, Apr 20 2001