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A300890 Lexicographically earliest sequence of distinct positive terms such that, for any n > 0, 2*a(n) + a(n+1) is a Fibbinary number (A003714). 3

%I #11 Mar 15 2018 15:07:08

%S 1,2,4,8,5,6,9,3,10,12,13,7,18,28,16,32,17,30,14,36,56,20,24,21,22,25,

%T 15,11,19,26,29,23,27,31,66,33,62,37,54,38,52,34,60,40,48,41,46,44,42,

%U 45,39,50,49,35,58,53,43,47,51,59,138,61,134,57,55,146

%N Lexicographically earliest sequence of distinct positive terms such that, for any n > 0, 2*a(n) + a(n+1) is a Fibbinary number (A003714).

%C The scatterplot of the sequence has fractal features.

%H Rémy Sigrist, <a href="/A300890/b300890.txt">Table of n, a(n) for n = 1..10000</a>

%H Rémy Sigrist, <a href="/A300890/a300890.png">Scatterplot of the first 250000 terms</a>

%H Rémy Sigrist, <a href="/A300890/a300890.txt">C++ program for A300890</a>

%o (C++) See Links section.

%Y Cf. A003714.

%K nonn,base,look

%O 1,2

%A _Rémy Sigrist_, Mar 14 2018

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)