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 A236916 #16 Jun 10 2020 05:09:28
%S A236916 0,1,2,2,2,2,3,3,4,5,6,6,6,6,7,7,8,9,10,10,10,10,11,11,12,13,14,14,14,
%T A236916 14,15,15,16,17,18,18,18,18,19,19,20,21,22,22,22,22,23,23,24,25,26,26,
%U A236916 26,26,27,27,28,29,30,30,30,30,31,31,32,33,34,34,34,34,35,35,36,37,38,38,38,38,39,39,40,41,42,42
%N A236916 The first "octad" is 0, 1, 2, 2, 2, 2, 3, 3; thereafter add 4 to get the next octad.
%H A236916 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,0,0,0,0,0,1,-1).
%F A236916 G.f.: (x+x^2+x^6+x^8)/((1-x)*(1-x^8)). - _Robert Israel_, Jun 09 2020
%t A236916 Flatten[NestList[4+#&,{0,1,2,2,2,2,3,3},10]] (* _Harvey P. Dale_, Oct 19 2015 *)
%Y A236916 Cf. A236680. A034583 is a very similar sequence.
%K A236916 nonn
%O A236916 0,3
%A A236916 _N. J. A. Sloane_, Feb 01 2014