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 A331904 #10 Feb 07 2020 21:06:13 %S A331904 0,0,1,0,2,1,1,2,2,2,2,3,3,3,3,3,4,3,4,5,4,4,5,5,5,6,5,6,6,6,7,6,7,7, %T A331904 7,8,7,8,8,8,9,8,9,9,9,10,9,10,10,10,11,10,11,11,12,11,12,12,12,12,12, %U A331904 13,13,13,13,14,13,14,14,15,14,15,15,15,15,16,15 %N A331904 Number of occurrences of n in A331859. %H A331904 Peter Kagey, <a href="/A331904/b331904.txt">Table of n, a(n) for n = 1..1000</a> %Y A331904 Cf. A331859, A331903. %K A331904 nonn %O A331904 1,5 %A A331904 _Peter Kagey_, Jan 31 2020