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