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 A151887 #13 Feb 24 2021 02:48:18 %S A151887 0,0,0,2,0,10,0,10,0,38,0,10,0,50,0,34,0,138,0,10,0,50,0,50,0,190,0, %T A151887 34,0,170,0,122,0,494,0,10,0,50,0,50,0,190,0,50,0,250,0,170,0,690,0, %U A151887 34,0,170,0,170,0,646,0,122,0,610,0,434,0,1762 %N A151887 Number of toothpicks turned OFF at generation n in A151885. %H A151887 Nathaniel Johnston, <a href="/A151887/b151887.txt">Table of n, a(n) for n = 0..926</a> %H A151887 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 A151887 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> %H A151887 N. J. A. Sloane, <a href="/A151885/a151885.pdf">Illustration of first 8 generations</a> %F A151887 a(2n) = 0 for all n >= 0. %Y A151887 Cf. A151885-A151888, A139250, A139251, A147562, A079314. %K A151887 nonn %O A151887 0,4 %A A151887 _N. J. A. Sloane_, Jul 23 2009 %E A151887 Terms after a(8) from _Nathaniel Johnston_, Apr 02 2011