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 A306781 #14 Mar 09 2019 20:22:36
%S A306781 2,8,39,369,9391
%N A306781 Number of distinct minimal polynomials of n X n matrices with elements {0, 1}.
%H A306781 S. E. Thornton, <a href="http://www.bohemianmatrices.com/cpdb/unstructured/unstructured_0_1">Properties of the Bohemian family of n x n matrices with population {0, 1}</a>, Characteristic Polynomial Database.
%Y A306781 Number of characteristic polynomials is in A272661.
%K A306781 nonn,more,hard
%O A306781 1,1
%A A306781 _Steven E. Thornton_, Mar 09 2019