A327182 - OEIS

%I #16 Sep 30 2019 18:08:11

%S 1,3,4,5,8,12,14,15,16,18,19,20,23,27,29,30,31,33,34,38,42,44,45,46,

%T 48,49,53,55,56,57,59,60,61,64,68,70,71,72,74,75,76,79,83,85,86,87,89,

%U 90,94,98,100,101,102,105,109,111,112,113,115,116,117,120,124

%N Positions of 1's in {A327180(n) : n > 0}.

%C Although a(n)/n->2, the sequence 2*n-a(n) appears to be unbounded below and above.

%C Positive integers k such that A327180(k) = 0. - _Jianing Song_, Sep 30 2019

%H Clark Kimberling and Jianing Song, <a href="/A327182/b327182.txt">Table of n, a(n) for n = 1..10000</a>

%t r = Sqrt[3]; z = 200;

%t t = Table[Floor[(2 n + 1)*r] - Floor[n*r + r] - Floor[n*r], {n, 1, z}] (* {A327180(n) : n > 0} *)

%t Flatten[Position[t, 0]] (* A327181 *)

%t Flatten[Position[t, 1]] (* A327182 *)

%Y Cf. A327180, A327181 (complement).

%K nonn,easy

%O 1,2

%A _Clark Kimberling_, Aug 25 2019

%E Corrected by _Jianing Song_, Sep 30 2019