A190251 Positions of 2 in A190248.

3, 8, 11, 16, 21, 24, 29, 32, 37, 42, 45, 50, 53, 55, 58, 63, 66, 71, 76, 79, 84, 87, 92, 97, 100, 105, 110, 113, 118, 121, 126, 131, 134, 139, 142, 144, 147, 152, 155, 160, 165, 168, 173, 176, 181, 186, 189, 194, 197, 199, 202, 207, 210, 215, 220, 223, 228, 231, 236, 241, 244, 249, 254, 257, 262, 265, 270, 275, 278, 283, 286, 288

Offset: 1

Author

Clark Kimberling, May 06 2011

Keywords

• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 1..2700
• Burghard Herrmann, How integer sequences find their way into areas outside pure mathematics, The Fibonacci Quarterly (2019) Vol. 57, No. 5, 67-71.

Crossrefs

Cf. A190248, A190249, A190250.

Programs

Mathematica

u = GoldenRatio; v = u^2; w=u^3;
f[n_] := Floor[n*u + n*v + n*w] - Floor[n*u] - Floor[n*v] - Floor[n*w]
t = Table[f[n], {n, 1, 120}] (* A190248 *)
Flatten[Position[t, 0]]      (* A190249 *)
Flatten[Position[t, 1]]      (* A190250 *)
Flatten[Position[t, 2]]      (* A190251 *)