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Positions of 0's in {A327177(n) : n > 0}.
3

%I #16 Sep 30 2019 18:07:59

%S 3,4,5,9,10,15,16,17,20,21,22,26,27,28,29,32,33,34,38,39,44,45,46,50,

%T 51,55,56,57,58,61,62,63,67,68,73,74,75,79,80,85,86,87,90,91,92,96,97,

%U 98,99,102,103,104,108,109,114,115,116,119,120,121,125

%N Positions of 0's in {A327177(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 A327177(k) = 0. - _Jianing Song_, Sep 30 2019

%H Clark Kimberling and Jianing Song, <a href="/A327178/b327178.txt">Table of n, a(n) for n = 1..10000</a>

%t r = Sqrt[2]; z = 200;

%t t = Table[Floor[(2 n + 1)*r] - Floor[n*r + r] - Floor[n*r], {n, 1, z}] (* {A327177(n) : n > 0} *)

%t Flatten[Position[t, 0]] (* A327178 *)

%t Flatten[Position[t, 1]] (* A327179 *)

%Y Cf. A327177, A327179 (complement).

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, Aug 25 2019

%E Corrected by _Jianing Song_, Sep 30 2019