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 A162799 #7 Feb 24 2021 02:48:18 %S A162799 1,2,2,2,2,4,8,14,8,4,2,4,8,14,14,16,20,38,58,88,36,12,8,6,10,14,14, %T A162799 16,20,38,58,88,54,42,44,68,90,124,112,134,166,292,372,500,192,76,84, %U A162799 66,48,28,30,32,28,42,60,88,54,42,44,68,90,124,112,134,166,292,372,500,246 %N A162799 a(n) = A160161(n+2)/4. %H A162799 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 A162799 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 A162799 a(n) = A162798(n+1)/2. %Y A162799 Cf. A139250, A139251, A160160, A160161, A162798. %K A162799 nonn %O A162799 1,2 %A A162799 _Omar E. Pol_, Jul 28 2009