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 A338091 #9 Oct 13 2020 14:30:17 %S A338091 1,2,1,3,4,5,2,1,6,7,8,9,10,3,11,12,4,13,2,1,5,14,15,16,17,18,19,20, %T A338091 21,22,23,6,24,25,7,26,27,8,3,28,9,29,30,10,31,4,32,2,1,33,11,34,35, %U A338091 36,37,12,5,38,39,40,41,42,13,43,44,45,46,47,52,48,49,54 %N A338091 a(n) is the only positive integer k such that A337226(k) = A337226(k + n). %H A338091 Peter Kagey, <a href="/A338091/b338091.txt">Table of n, a(n) for n = 1..2500</a> %e A338091 For n = 6, a(6) = 5 because A337226(5) = 3 = A337226(5 + 6). %Y A338091 Cf. A337226, A338092. %K A338091 nonn %O A338091 1,2 %A A338091 _Peter Kagey_, Oct 09 2020