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 A282471 #14 Oct 30 2017 21:43:00 %S A282471 0,1,8,7,24,22,40,22,80,54,80,22,80,54,112,70,240,134,144,22,80,54, %T A282471 112,70,240,134,176,70,240,150,336,246,720,326,272,22,80,54,112,70, %U A282471 240,134,176,70,240,150,336,246,720,326,304,70,240,150,336,246,720,342,464,246,752,454,1136,838,2064 %N A282471 First differences of A282470. %H A282471 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 A282471 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %F A282471 a(2n) = 2*A187211(2n). %F A282471 a(2n+1) = A187211(2n+1). %e A282471 Written as an irregular triangle the sequence begins: %e A282471 0; %e A282471 1; %e A282471 8; %e A282471 7; %e A282471 24; %e A282471 22, 40; %e A282471 22, 80, 54, 80; %e A282471 22, 80, 54, 112, 70, 240, 134, 144; %e A282471 22, 80, 54, 112, 70, 240, 134, 176, 70, 240, 150, 336, 246, 720, 326, 272; %e A282471 22, 80, 54, 112, 70, 240, 134, 176, 70, 240, 150, 336, 246, 720, 326, 304, 70,... %e A282471 ... %e A282471 Starting from a(3) = 7 the row lengths of triangle are the terms of A011782. %Y A282471 Cf. A011782, A139251, A187210, A187211, A182470, A282470. %K A282471 nonn,tabf %O A282471 0,3 %A A282471 _Omar E. Pol_, Mar 17 2017