A043509 Numbers having exactly one 5 in base 10.

5, 15, 25, 35, 45, 50, 51, 52, 53, 54, 56, 57, 58, 59, 65, 75, 85, 95, 105, 115, 125, 135, 145, 150, 151, 152, 153, 154, 156, 157, 158, 159, 165, 175, 185, 195, 205, 215, 225, 235, 245, 250, 251, 252, 253, 254, 256, 257, 258, 259

Offset

1,1

Links

Enrique Pérez Herrero, Table of n, a(n) for n = 1..2000

Index entries for 10-automatic sequences.

Formula

a(n) ≍ n^k log n, with k = log 9/log 10 = 0.9542425... = A104139. - Charles R Greathouse IV, Nov 01 2022

Mathematica

Select[Range[9000], DigitCount[#, 10, 5]==1&] (* Enrique Pérez Herrero, Nov 29 2013 *)

Crossrefs

Cf. A043489, A043493, A043497, A043501, A043505, A043513, A043517, A043521, A043525, A011535.

Sequence in context: A031236 A011535 A283608 * A121025 A277592 A323354

Adjacent sequences: A043506 A043507 A043508 * A043510 A043511 A043512

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved