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 A037158 #3 Mar 31 2012 13:19:58 %S A037158 13,18,28,35,44,52,61,70,80,91,104,120,141,170,212,275,372,524,765, %T A037158 1150,1768,2763,4368,6960,11149,17922,28876,46595,75260,121636,196669, %U A037158 318070,514496,832315,1346552,2178600,3524877,5703194,9227780,14930675 %N A037158 Convolution of natural numbers n >= 1 with Fibonacci numbers F(k), for k >= -7, with F(-n)=(-1)^(n+1)*F(n). %F A037158 a(n) = F(n-3)+(11+8*n); G.f. (13-21*x)/((1-x-x^2)*(1-x)^2); 11=L(5) Lucas number; %Y A037158 Cf. A000045, A000071, A002062, A037141. %K A037158 easy,nonn %O A037158 0,1 %A A037158 _Wolfdieter Lang_