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 A160718 #12 Feb 24 2021 02:48:18 %S A160718 1,2,3,4,5,7,9,10,11,13,15,17,20,25,29,30,31,33,35,37,40,45,49,51,54, %T A160718 59,64,70,80,93,101,102,103,105,107,109,112,117,121,123,126,131,136, %U A160718 142,152,165,173,175,178,183,188,194,204,217,226,232,242,256,271,292 %N A160718 a(n) = A160406(n+2)/2. %H A160718 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 A160718 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 A160718 a(n) = A160719(n) + 1 = -a(n-1) + n + (A139250(n+1) + 5)/4 for n > 0. - _Jinyuan Wang_, Mar 04 2020 %Y A160718 Cf. A139250, A152998, A153000, A160406, A160407, A160719. %K A160718 nonn %O A160718 0,2 %A A160718 _Omar E. Pol_, Jun 10 2009 %E A160718 More terms from _Jinyuan Wang_, Mar 04 2020