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 A067982 #4 Mar 31 2012 13:20:07 %S A067982 7,32,79,176,360,706,1341,2492,4553,8210,14648,25908,45491,79384, %T A067982 137795,238084,409704,702518,1200777,2046580,3479197,5900902,9987064, %U A067982 16870056,28446175,47887376,80493751,135112472 %N A067982 Convolution of L(n+1) := A000204(n+1) (Lucas), n>=0, with L(n+4), n>=0. %C A067982 Fourth diagonal of triangle A067979. Fourth column of triangle A067990. %F A067982 a(n)= sum(L(k+1)*L(n+4-k), k=0..n) = (11*n+7)*F(n+1)+7*(n+1)*F(n), with F(n) := A000045(n) (Fibonacci). %F A067982 G.f.: (7+4*x)*(1+2*x)/(1-x-x^2)^2. %K A067982 nonn,easy %O A067982 0,1 %A A067982 _Wolfdieter Lang_, Feb 15 2002