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 A350633 #12 Jan 22 2022 09:39:11 %S A350633 0,1,8,12,24,12,28,36,56,12,28,36,76,44,92,92,164,16,28,36,76,44,92, %T A350633 92,196,76,108,116,204,180,236,228,424,36,28,36,76,44,92,92,196,76, %U A350633 108,116,204,180,236,228,492,156,156,156,252,220,284,268,540,316,348 %N A350633 First differences of A350632. %C A350633 Equivalently, a(n) is the number of cells turned ON at stage n of the cellular automaton described in A350632. %H A350633 Rémy Sigrist, <a href="/A350633/a350633.txt">C++ program for A350633</a> %H A350633 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %e A350633 The first 5 generations can be depicted as follows: %e A350633 . . . . . . . . . . . %e A350633 . 5 5 . . . . . 5 5 . %e A350633 . 5 4 4 4 4 4 4 4 5 . %e A350633 . . 4 3 3 . 3 3 4 . . %e A350633 . . 4 3 2 2 2 3 4 . . %e A350633 . . 4 . 2 1 2 . 4 . . %e A350633 . . 4 3 2 2 2 3 4 . . %e A350633 . . 4 3 3 . 3 3 4 . . %e A350633 . 5 4 4 4 4 4 4 4 5 . %e A350633 . 5 5 . . . . . 5 5 . %e A350633 . . . . . . . . . . . %e A350633 - so a(0) = 0, %e A350633 a(1) = 1, %e A350633 a(2) = 8, %e A350633 a(3) = 12, %e A350633 a(4) = 24, %e A350633 a(5) = 12. %o A350633 (C++) See Links section. %Y A350633 Cf. A161415, A256531, A350632. %K A350633 nonn %O A350633 0,3 %A A350633 _Rémy Sigrist_, Jan 08 2022