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 A373052 #24 Dec 29 2024 06:20:38 %S A373052 1,1,2,1,1,2,2,3,3,1,1,2,1,1,2,2,3,3,2,3,3,4,4,5,4,4,5,1,3,2,4,1,1,2, %T A373052 1,3,2,4,2,5,1,2,2,1,3,3,4,3,4,5,2,4,3,5,5,6,3,4,3,6,4,4,5,5,4,5,5,6, %U A373052 6,7,6,6,7,7,5,8,6,8,6,7,7,2,7,7,2,8 %N A373052 Lexicographically earliest sequence of positive integers such that no three terms a(j), a(j+k), a(j+2k) (for any j and k) form a weakly decreasing arithmetic progression. %H A373052 Neal Gersh Tolunsky, <a href="/A373052/b373052.txt">Table of n, a(n) for n = 1..10000</a> %H A373052 Rémy Sigrist, <a href="/A373052/a373052.gp.txt">PARI program</a>. %H A373052 Neal Gersh Tolunsky, <a href="/A373052/a373052.png">Graph of first 400000 terms</a>. %o A373052 (PARI) \\ See Links section. %Y A373052 Cf. A229037, A309890, A100480, A373010, A361933, A371632, A373111, A371457. %K A373052 nonn,look %O A373052 1,3 %A A373052 _Neal Gersh Tolunsky_, May 20 2024