cp's OEIS Frontend

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.

A325495 Difference sequence of A325420.

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%I A325495 #6 May 06 2019 08:48:22
%S A325495 2,1,3,3,3,2,4,2,1,3,2,1,3,4,2,2,1,3,3,3,2,1,3,3,3,2,1,3,2,2,2,2,1,3,
%T A325495 3,3,2,4,2,1,3,2,1,3,3,3,2,1,3,2,1,3,2,4,3,3,2,1,3,4,2,2,1,3,3,3,2,4,
%U A325495 2,1,3,2,1,3,4,2,2,1,3,3,3,2,4,3,3,2
%N A325495 Difference sequence of A325420.
%C A325495 See A325417 for a guide to related sequences. Conjecture: every term is in {1,2,3,4}.
%t A325495 a = {1}; Do[AppendTo[a, NestWhile[# + 1 &, Last[a] + 1,
%t A325495 Apply[Or, Map[MemberQ[a, #] &, Select[Flatten[{#/3, (# - 1)/2}],
%t A325495 IntegerQ]]] &]], {2000}]; a ;       (* A325419 *)
%t A325495 c = Complement[Range[Last[a]], a] ; (* A325420 *)
%t A325495 Differences[a]  (* A325494 *)
%t A325495 Differences[c]  (* A325495 *)
%t A325495 (* _Peter J. C. Moses_, Apr 23 2019 *)
%Y A325495 Cf. A325417, A325494.
%K A325495 nonn,easy
%O A325495 1,1
%A A325495 _Clark Kimberling_, May 05 2019