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 A365836 #24 Sep 26 2023 13:38:47 %S A365836 1,1,2,2,1,2,3,2,3,1,1,2,3,1,2,3,2,3,1,2,3,1,2,1,1,2,3,1,2,3,1,2,1,2, %T A365836 2,1,2,3,2,3,1,2,3,1,2,1,2,2,1,2,3,1,2,1,2,2,3,1,1,2,3,1,2,3,1,2,1,2, %U A365836 2,1,2,3,1,2,1,2,2,3,1,2,2,1,2,2,3,1,2,2,2,3,2,3,1,2,3,1,2,1,2,2 %N A365836 a(1)=1; thereafter extend the sequence by appending its nonincreasing run transform, recompute the nonincreasing run transform, append it, and so on. %C A365836 The nonincreasing run transform replaces each run of weakly decreasing terms with a single value which is the length of that run. %H A365836 Neal Gersh Tolunsky, <a href="/A365836/b365836.txt">Table of n, a(n) for n = 1..10632</a> (first 25 rows) %H A365836 Neal Gersh Tolunsky, <a href="/A365836/a365836.png">Ordinal transform on the first 35 iterations of the sequence</a> %e A365836 Irregular triangle in which each row (after the initial 1) is the nonincreasing run transform of the concatenation of the previous rows: %e A365836 1; %e A365836 1; %e A365836 2; %e A365836 2, 1; %e A365836 2, 3; %e A365836 2, 3, 1, 1; %e A365836 2, 3, 1, 2, 3; %e A365836 2, 3, 1, 2, 3, 1, 2, 1, 1; %e A365836 2, 3, 1, 2, 3, 1, 2, 1, 2, 2, 1, 2, 3; %e A365836 2, 3, 1, 2, 3, 1, 2, 1, 2, 2, 1, 2, 3, 1, 2, 1, 2, 2, 3, 1, 1; %e A365836 ... %Y A365836 Cf. A365838, A306211. %K A365836 nonn,tabf %O A365836 1,3 %A A365836 _Neal Gersh Tolunsky_, Sep 19 2023