A031331 Position of n-th 6 in A031324.

25, 43, 45, 51, 59, 63, 65, 80, 105, 107, 135, 159, 161, 168, 179, 188, 195, 227, 250, 253, 268, 270, 278, 301, 309, 311, 326, 344, 351, 353, 360, 369, 375, 403, 418, 433, 448, 450, 457, 493, 504, 505, 511, 535, 559, 563, 581

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Programs

Mathematica

Flatten[Position[Flatten[IntegerDigits/@Fibonacci[Range[0,90]]],6]]-2 (* Harvey P. Dale, Jan 28 2015 *)