A190241 - OEIS

%I #9 Dec 27 2017 01:37:24

%S 1,2,3,4,6,7,8,9,11,12,13,14,16,17,18,19,22,23,24,27,28,32,33,37,38,

%T 43,48,55,56,57,59,60,61,62,64,65,66,67,69,70,71,72,74,75,76,80,81,85,

%U 86,90,91,95,96,101,109,110,111,112,113,114,115,117,118,119,120,122,123,124,125,127,128,129,132,133,134,138,139,143,144,148,149,164

%N Positions of 1 in A190239; complement of A190240.

%H G. C. Greubel, <a href="/A190241/b190241.txt">Table of n, a(n) for n = 1..5500</a>

%t u = Exp[Pi/2]; v = 1/u;

%t f[n_] := Floor[n*u + n*v] - Floor[n*u] - Floor[n*v]

%t t = Table[f[n], {n, 1, 120}] (*A190239*)

%t Flatten[Position[t, 0]]      (*A190240*)

%t Flatten[Position[t, 1]]      (*A190241*)

%Y Cf. A190239, A190240.

%K nonn

%O 1,2

%A _Clark Kimberling_, May 06 2011