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 A358619 #11 Nov 25 2022 13:31:08
%S A358619 1,1,2,2,2,2,2,2,1,2,2,2,2,2,1,2,2,2,2,2,2,1,2,2,2,3,2,2,2,2,2,2,2,2,
%T A358619 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,2,
%U A358619 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2,2,2,2
%N A358619 First forward difference of A258037.
%C A358619 Conjecture: All terms belong to {1, 2, 3}. See third comment in A258037.
%t A358619 nn = 210; p = Prime@ Range@ nn; t = Table[ Differences[p, n][[1]], {n, 0, nn - 1}]; s = Select[ Range@ nn, t[[#]] > 0 &]; d = Differences@ s
%Y A358619 Cf. A258037, A358618.
%K A358619 easy,nonn
%O A358619 1,3
%A A358619 _Clark Kimberling_ and _Robert G. Wilson v_, Oct 31 2022