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A190566 Positions of 4 in A190561.

%I A190566 #7 Jul 04 2017 21:19:29
%S A190566 12,24,41,53,70,82,111,123,140,152,181,193,210,222,239,251,280,292,
%T A190566 309,321,350,362,379,391,408,420,432,449,461,478,490,519,531,548,560,
%U A190566 589,601,618,630,647,659,688,700,717,729,758,770,787,799,816,828,840,857,869,886,898,927,939,956,968,997,1009
%N A190566 Positions of 4 in A190561.
%C A190566 See A190561.
%H A190566 G. C. Greubel, <a href="/A190566/b190566.txt">Table of n, a(n) for n = 1..1000</a>
%t A190566 r = Sqrt[2]; b = 4; c = 3;
%t A190566 f[n_] := Floor[(b*n + c)*r] - b*Floor[n*r] - Floor[c*r];
%t A190566 t = Table[f[n], {n, 1, 200}] (* A190561 *)
%t A190566 Flatten[Position[t, 0]]          (* A190562 *)
%t A190566 Flatten[Position[t, 1]]          (* A190563 *)
%t A190566 Flatten[Position[t, 2]]          (* A190564 *)
%t A190566 Flatten[Position[t, 3]]          (* A190565 *)
%t A190566 Flatten[Position[t, 4]]          (* A190566 *)
%Y A190566 Cf. A190561.
%K A190566 nonn
%O A190566 1,1
%A A190566 _Clark Kimberling_, May 12 2011