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 A120178 #5 Oct 31 2013 12:17:39
%S A120178 1,1,1,1,1,1,1,2,2,2,3,3,4,4,5,6,7,8,9,11,13,15,17,20,23,27,32,37,43,
%T A120178 50,59,69,80,93,109,127,148,173,202,235,275,320,374,436,509,594,693,
%U A120178 808,943,1100,1283,1497,1747,2038,2377,2774,3236,3775,4404,5138,5995,6994
%N A120178 a(n)=ceiling( sum_{i=1..n-1} a(i)/6), a(1)=1.
%t A120178 f[s_] := Append[s, Ceiling[Plus @@ s/5]]; Nest[f, {1}, 61] (* _Robert G. Wilson v_ *)
%Y A120178 Cf. A112088, A072493, A011782, A073941, A072493, A120160, A120170, A120186, A120194, A120202.
%K A120178 nonn
%O A120178 1,8
%A A120178 _Graeme McRae_, Jun 10 2006
%E A120178 Edited and extended by _Robert G. Wilson v_, Jul 07 2006