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 A160742 #10 Feb 24 2021 02:48:18 %S A160742 0,2,4,8,12,16,20,28,36,40,44,52,60,68,76,92,108,112,116,124,132,140, %T A160742 148,164,180,188,196,212,228,244,260,292,324,328,332,340,348,356,364, %U A160742 380,396,404,412,428,444,460,476,508,540,548,556,572,588,604,620,652,684 %N A160742 a(n) = A151566(n)*2. %H A160742 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 A160742 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> %Y A160742 Cf. A139250, A151566, A160720, A160722, A160736, A160738, A160740, A160744, A160746. %K A160742 nonn %O A160742 0,2 %A A160742 _Omar E. Pol_, May 25 2009 %E A160742 More terms from _Jinyuan Wang_, Mar 14 2020