A031051 Position of n-th 5 in A031045.

5, 18, 34, 50, 66, 73, 75, 77, 79, 81, 82, 83, 85, 87, 98, 114, 135, 159, 183, 207, 231, 241, 244, 247, 250, 253, 255, 256, 259, 262, 279, 303, 327, 351, 375, 399, 423, 433, 436, 439, 442, 445, 447, 448, 451, 454, 471, 495, 519

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Programs

Mathematica

Flatten[Position[Flatten[Table[Reverse[IntegerDigits[n,8]], {n,300}]], 5]] (* Harvey P. Dale, Aug 08 2011 *)