A286043 - OEIS

%I #9 Apr 27 2023 06:09:30

%S 1,4,6,8,10,12,15,17,19,22,24,26,29,31,33,36,38,40,43,45,47,49,51,54,

%T 56,58,61,63,65,68,70,72,74,76,79,81,83,86,88,90,93,95,97,99,101,104,

%U 106,108,111,113,115,118,120,122,124,126,129,131,133,136,138

%N (1/2)*A285658.

%C Conjecture:  a(n)/n -> (5 + sqrt(17))/2.

%H Georg Fischer, <a href="/A286043/b286043.txt">Table of n, a(n) for n = 1..10000</a> [First 8730 terms from Clark Kimberling]

%t s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 1, 1}}] &, {0}, 10] (* A285657 *)

%t u = Flatten[Position[s, 0]]  (* A285658 *)

%t u/2 (* A286043 *)

%Y Cf. A285657, A285658, A285659.

%K nonn,easy

%O 1,2

%A _Clark Kimberling_, May 01 2017