A190490 Positions of 2 in A190487.

2, 7, 9, 12, 14, 19, 21, 24, 26, 31, 33, 36, 38, 41, 43, 48, 50, 53, 55, 60, 62, 65, 67, 70, 72, 77, 79, 82, 84, 89, 91, 94, 96, 101, 106, 108, 111, 113, 118, 120, 123, 125, 130, 132, 135, 137, 140, 142, 147, 149, 152, 154, 159, 161, 164, 166, 171, 176, 178, 181, 183, 188, 190, 193, 195, 200, 202, 205, 207, 210, 212, 217, 219, 222

Offset: 1

Author

Clark Kimberling, May 11 2011

Keywords

• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A190487.

Programs

Mathematica

r = Sqrt[2]; b = 3; c = 0;
f[n_] := Floor[(b*n + c)*r] - b*Floor[n*r] - Floor[c*r];
t = Table[f[n], {n, 1, 200}]  (* A190487 *)
Flatten[Position[t, 0]]   (* A190488 *)
Flatten[Position[t, 1]]   (* A190489 *)
Flatten[Position[t, 2]]   (* A190490 *)