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 A183005 #13 Oct 13 2023 06:49:19 %S A183005 0,1,4,6,8,8,16,22,16,8,16,24,24,32,56,62,32,8,16,24,24,32,56,64,40, %T A183005 32,56,72,80,120,176,158,64,8,16,24,24,32,56,64,40,32,56,72,80,120,176 %N A183005 Number of toothpicks added at n-th stage to the toothpick structure of A183004. %C A183005 Essentially the first differences of A183004. %H A183005 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 A183005 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> %e A183005 If written as a triangle begins: %e A183005 0, %e A183005 1, %e A183005 4, %e A183005 6,8, %e A183005 8,16,22,16, %e A183005 8,16,24,24,32,56,62,32, %e A183005 8,16,24,24,32,56,64,40,32,56,72,80,120,176,158,64, %Y A183005 Cf. A139250, A139251, A182841, A183004. %K A183005 nonn %O A183005 0,3 %A A183005 _Omar E. Pol_, Mar 27 2011