A031065 Position of n-th 7 in A031057.

4, 12, 20, 28, 36, 44, 52, 53, 55, 57, 59, 60, 72, 84, 96, 108, 120, 132, 144, 146, 149, 152, 155, 156, 168, 180, 192, 204, 216, 228, 240, 242, 245, 248, 251, 252, 264, 276, 288, 300, 312, 324, 336, 338, 341, 344, 347, 348, 360

Offset

1,1

Links

Table of n, a(n) for n=1..49.

Mathematica

Position[Table[IntegerDigits[2n-1, 8], {n, 200}]//Flatten, 7]//Flatten (* Harvey P. Dale, Feb 13 2023 *)

Crossrefs

Sequence in context: A190748 A273253 A328304 * A017113 A316489 A081770

Adjacent sequences: A031062 A031063 A031064 * A031066 A031067 A031068

Keyword

nonn

Author

Clark Kimberling

Status

approved