%I #7 Jul 04 2017 21:19:19
%S 4,6,11,16,18,23,28,33,35,40,45,47,52,57,62,64,69,74,76,81,86,88,93,
%T 98,103,105,110,115,117,122,127,132,134,139,144,146,151,156,158,161,
%U 163,168,173,175,180,185,187,192,197,202,204,209,214,216,221,226,228,231,233,238,243,245,250,255,257,262,267,272,274,279,284,286
%N Positions of 2 in A190561.
%C See A190561.
%H G. C. Greubel, <a href="/A190564/b190564.txt">Table of n, a(n) for n = 1..1000</a>
%t r = Sqrt[2]; b = 4; c = 3;
%t f[n_] := Floor[(b*n + c)*r] - b*Floor[n*r] - Floor[c*r];
%t t = Table[f[n], {n, 1, 200}] (* A190561 *)
%t Flatten[Position[t, 0]] (* A190562 *)
%t Flatten[Position[t, 1]] (* A190563 *)
%t Flatten[Position[t, 2]] (* A190564 *)
%t Flatten[Position[t, 3]] (* A190565 *)
%t Flatten[Position[t, 4]] (* A190566 *)
%Y Cf. A190561.
%K nonn
%O 1,1
%A _Clark Kimberling_, May 12 2011