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 A037141 #5 Nov 06 2017 09:39:08
%S A037141 5,7,11,14,18,22,27,33,41,52,68,92,129,187,279,426,662,1042,1655,2645,
%T A037141 4245,6832,11016,17784,28733,46447,75107,121478,196506,317902,514323,
%U A037141 832137,1346369,2178412,3524684,5702996,9227577,14930467,24157935,39088290
%N A037141 Convolution of natural numbers n >= 1 with Fibonacci numbers F(k), for k >= -5, with F(-n)=(-1)^(n+1)*F(n);.
%H A037141 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (3,-2,-1,1).
%F A037141 a(n) = F(n-1)+(4+3*n); G.f.: (5-8*x)/((1-x-x^2)*(1-x)^2)
%t A037141 CoefficientList[Series[(5-8x)/((1-x-x^2)(1-x)^2),{x,0,40}],x] (* or *) LinearRecurrence[{3,-2,-1,1},{5,7,11,14},40] (* _Harvey P. Dale_, Nov 06 2017 *)
%Y A037141 Cf. A000045, A000071, A002062.
%K A037141 easy,nonn
%O A037141 0,1
%A A037141 _Wolfdieter Lang_
%E A037141 More terms from _Harvey P. Dale_, Nov 06 2017