cp's OEIS Frontend

A282061 Lexicographically earliest sequence of distinct terms such that, for any prime p, any run of consecutive multiples of p has length exactly 2, and the terms in such a run have the same p-adic valuation.

%I A282061 #7 Feb 10 2017 01:17:57
%S A282061 1,2,6,3,4,12,15,5,7,14,10,35,21,24,8,9,18,22,11,13,26,30,105,28,20,
%T A282061 45,36,44,33,39,52,60,165,77,42,66,55,40,56,63,72,88,99,90,70,91,65,
%U A282061 80,16,17,34,38,19,23,46,50,25,27,54,58,29,31,62,74,37,32,96
%N A282061 Lexicographically earliest sequence of distinct terms such that, for any prime p, any run of consecutive multiples of p has length exactly 2, and the terms in such a run have the same p-adic valuation.
%C A282061 This sequence is similar to A280864, with an additional constraint on the p-adic valuation of consecutive multiples of any prime p. However, the graphs of those two sequences are quite different.
%H A282061 Rémy Sigrist, <a href="/A282061/b282061.txt">Table of n, a(n) for n = 1..10000</a>
%H A282061 Rémy Sigrist, <a href="/A282061/a282061.pdf">Illustration of the first terms</a>
%H A282061 Rémy Sigrist, <a href="/A282061/a282061.gp.txt">PARI program for A282061</a>
%e A282061 See Links section.
%Y A282061 Cf. A280864.
%K A282061 nonn,look
%O A282061 1,2
%A A282061 _Rémy Sigrist_, Feb 05 2017