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 A033811 #5 Mar 31 2012 13:19:57 %S A033811 3,10,24,49,92,164,283,478,796,1313,2152,3512,5715,9282,15056,24401, %T A033811 39524,63996,103595,167670,271348,439105,710544,1149744,1860387, %U A033811 3010234,4870728,7881073,12751916,20633108 %N A033811 Convolution of natural numbers n >= 1 with Lucas numbers L(k)(A000032) for k >= 2. %D A033811 W. Lang in: "Applications of Fibonacci Numbers", Vol. 7, p. 235, eds.: G. E. Bergum et al., Kluwer, Dordrecht, 1998 %F A033811 a(n)=L(5)*(F(n+1)-1)+L(4)*F(n)-L(3)*n, F(n): Fibonacci (A000045). G.F. x*(3+x)/((1-x-x^2)*(1-x)^2) %Y A033811 A000045, A000032. %K A033811 easy,nonn %O A033811 1,1 %A A033811 _Wolfdieter Lang_