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 A159799 #10 Feb 24 2021 02:48:18 %S A159799 0,1,1,0,1,5,4,0,1,3,2,1,7,18,12,0,1,3,2,1,7,14,8,1,5,8,5,9,32,64,24, %T A159799 0,1,3,2,1,7,14,8,1,5,8,5,9,32,48,24,1,5 %N A159799 First differences of A159789. %H A159799 David Applegate, Omar E. Pol and N. J. A. Sloane, <a href="/A000695/a000695_1.pdf">The Toothpick Sequence and Other Sequences from Cellular Automata</a>, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.] %H A159799 N. J. A. Sloane, <a href="/wiki/Catalog_of_Toothpick_and_CA_Sequences_in_OEIS">Catalog of Toothpick and Cellular Automata Sequences in the OEIS</a> %F A159799 a(n) = A159796(n+1)/4. %Y A159799 Cf. A139250, A153000, A159786, A159789, A159796. %K A159799 more,nonn %O A159799 1,6 %A A159799 _Omar E. Pol_, Jun 13 2009 %E A159799 More terms from _Colin Barker_, Apr 19 2015