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 A194126 #5 Mar 30 2012 18:57:40
%S A194126 1,6,13,23,36,51,69,89,112,138,166,197,231,267,306,347,391,438,487,
%T A194126 539,593,650,710,772,837,905,975,1048,1123,1201,1282,1365,1451,1540,
%U A194126 1631,1725,1821,1920,2022,2126,2233,2342,2454,2569,2686,2806,2929
%N A194126 -1+A088207.
%C A194126 A194077 is the natural fractal sequence of A194126.
%F A194126 a(n)=-1+sum(floor(j+j*r) : 1<=j<=n), where r=(1+sqrt(5))/2, the golden ratio.
%t A194126 c[k_]:=-1+Sum[Floor[j+j*GoldenRatio],{j,1,k}];
%t A194126 c=Table[c[k],{k,1,40}]
%Y A194126 Cf. A088207, A194077, A194100.
%K A194126 nonn
%O A194126 1,2
%A A194126 _Clark Kimberling_, Aug 15 2011