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 A345901 #9 Jul 01 2021 16:11:11 %S A345901 2,2,2,3,2,4,5,2,2,2,4,2,8,2,2,2,4,3,2,6,2,2,2,8,2,4,3,2,2,3,6,2,3,2, %T A345901 2,2,10,3,2,3,3,3,3,13,2,2,2,4,2,5,4,2,2,2,5,2,6,2,2,2,6,3,3,4,2,2,2, %U A345901 12,2,3,2,2,2,5,5,2,3,2,3,2,21,2,2,2,4,3 %N A345901 a(n) is the largest k such that the tribonacci word A080843 contains a block of length k*n that is an abelian k-th power. %C A345901 An abelian k-th power consists of k blocks x_1 x_2 ... x_k such that each x_i is a permutation of x_1. For example, the English word "deeded" is an abelian 3rd power. %e A345901 For n=4, A080843 contains the block 2010.0102.0102, which is an abelian 3rd power. But no blocks of size 16 in A080843 are abelian 4th powers. %Y A345901 Cf. A080843. %K A345901 nonn %O A345901 1,1 %A A345901 _Jeffrey Shallit_, Jun 29 2021