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 A355311 #27 Aug 31 2022 09:08:06 %S A355311 1,2,4,6,8,6,10,14,18,10,10,14,20,18,24,36,44,22 %N A355311 Number of V-toothpicks added at n-th stage to the V-toothpick structure of A355310. %C A355311 An idea from Jean Hoffmann. %H A355311 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 A355311 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %H A355311 <a href="/index/To#toothpick">Index entries for sequences related to toothpick sequences</a> %e A355311 Written as an irregular triangle in which the row lengths give 1 together with A011782 the sequence begins: %e A355311 1; %e A355311 2; %e A355311 4; %e A355311 6, 8; %e A355311 6, 10, 14, 18; %e A355311 10, 10, 14, 20, 18, 24, 36, 44; %e A355311 ... %Y A355311 First differences of A355310. %Y A355311 Cf. A011782, A139251, A160121, A161207, A161413, A161421, A296612, A299477, A299479. %K A355311 nonn,tabf,more %O A355311 1,2 %A A355311 Jean Hoffmann and _Omar E. Pol_, Jul 20 2022