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 A294963 #24 Mar 04 2019 20:26:55 %S A294963 1,4,8,8,12,20,16,8,24,16 %N A294963 a(n) is the number of elements added at n-th stage in the structure of the finite cellular automaton of A294962. %H A294963 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 A294963 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %H A294963 <a href="/index/To#toothpick">Index entries for sequences related to toothpick sequences</a> %e A294963 The finite sequence can be written as an array of four columns as shown below: %e A294963 1, 4, 8, 8; %e A294963 12, 20, 16, 8; %e A294963 24, 16. %e A294963 The first column gives the number of toothpicks of length 2. %e A294963 The second column gives the number of D-toothpicks. %e A294963 The third column gives the number of toothpicks of length 1. %e A294963 The fourth column gives the number of T-toothpicks. %e A294963 The sequence contains exactly 10 terms. %Y A294963 Cf. A294962. %Y A294963 Cf. A139251 (toothpicks), A160173 (T-toothpicks), A194701 (D-toothpicks), A220501. %Y A294963 For other hybrid cellular automata, see A289841, A290221, A294021, A294981. %K A294963 nonn,tabf,fini,full %O A294963 1,2 %A A294963 _Omar E. Pol_, Feb 10 2018