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 A160745 #10 Feb 24 2021 02:48:18 %S A160745 3,3,6,6,6,6,12,12,6,6,12,12,12,12,24,24,6,6,12,12,12,12,24,24,12,12, %T A160745 24,24,24,24,48,48,6,6,12,12,12,12,24,24,12,12,24,24,24,24,48,48,12, %U A160745 12,24,24,24,24,48,48,24,24,48,48,48,48,96,96,6,6,12,12,12,12,24,24,12,12,24 %N A160745 First differences of A160744. %H A160745 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 A160745 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 A160745 a(n)=3*A060632(n). [From _R. J. Mathar_, Feb 03 2010] %Y A160745 Cf. A139251, A151566, A160743, A160744. %K A160745 nonn %O A160745 1,1 %A A160745 _Omar E. Pol_, May 25 2009 %E A160745 Terms beyond a(7) from _R. J. Mathar_, Feb 03 2010