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 A325528 #6 May 07 2019 19:22:08
%S A325528 2,1,1,4,2,1,2,1,1,1,2,1,1,2,3,1,2,4,2,1,1,2,2,3,1,2,1,2,1,2,3,1,2,1,
%T A325528 2,1,1,1,3,1,2,2,2,2,3,1,2,1,2,1,2,2,1,1,2,3,1,2,3,1,2,1,2,1,2,3,1,2,
%U A325528 3,1,2,2,2,2,1,2,1,2,3,1,2,1,1,2,2,3
%N A325528 Difference sequence of A325464.
%C A325528 See A325417 for a guide to related sequences. Conjecture: every term is in {1,2,3,4}.
%H A325528 Clark Kimberling, <a href="/A325528/b325528.txt">Table of n, a(n) for n = 1..10000</a>
%t A325528 a = {1}; Do[AppendTo[a, NestWhile[# + 1 &, Last[a] + 1, Apply[Or,
%t A325528 Map[MemberQ[a, #] &, Select[Flatten[{#/2, (#+2)/3}],
%t A325528 IntegerQ]]] &]], {20000}]; a; (* A315464 *)
%t A325528 c = Complement[Range[Last[a]], a] ; (* A325465 *)
%t A325528 Differences[a] (* A325528 *)
%t A325528 Differences[c] (* A325529 *)
%t A325528 (* _Peter J. C. Moses_, Apr 23 2019 *)
%Y A325528 Cf. A325417, A325464, A325529.
%K A325528 nonn,easy
%O A325528 1,1
%A A325528 _Clark Kimberling_, May 07 2019