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 A326921 #13 Oct 22 2019 15:57:45 %S A326921 1,1,2,1,2,3,1,3,2,4,1,4,3,2,5,1,4,5,2,3,6,1,4,7,2,3,5,6,1,4,7,3,6,2, %T A326921 5,8,1,5,9,2,7,3,4,8,6,1,4,5,8,9,2,3,6,7,10,1,8,9,5,2,6,10,7,3,4,11,1, %U A326921 2,6,10,8,9,4,5,3,7,11,12,1,2,7,12,13,4,5,3,8,6,11,9,10 %N A326921 Triangle (1 <= k <= n) read by rows: row n gives lexicographically earliest evenly spaced arrangement of weights 1...n around the circumference of a circular disk minimizing the resulting imbalance. %C A326921 For comments and references see A118887 and A118888. %H A326921 Hugo Pfoertner, <a href="/A326921/b326921.txt">Table of n, a(n) for n = 1..171</a>, rows 1..18 of triangle, flattened. %Y A326921 Cf. A118887, A118888. %K A326921 nonn,tabl %O A326921 1,3 %A A326921 _Hugo Pfoertner_, Oct 21 2019