A043521 Numbers having one 8 in base 10.

8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 89, 98, 108, 118, 128, 138, 148, 158, 168, 178, 180, 181, 182, 183, 184, 185, 186, 187, 189, 198, 208, 218, 228, 238, 248, 258, 268, 278, 280, 281, 282, 283, 284, 285, 286, 287, 289, 298, 308, 318

Offset

1,1

Links

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

Index entries for 10-automatic sequences.

Mathematica

Select[Range[300], DigitCount[#, 10, 8]==1&] (* Harvey P. Dale, Jan 06 2012 *)

Prog

(PARI) is(n)=my(d=digits(n)); sum(i=1, #d, d[i]==8)==1 \\ Charles R Greathouse IV, Feb 12 2017
(Python)
def ok(n): return str(n).count('8') == 1
print(list(filter(ok, range(320)))) # Michael S. Branicky, Aug 18 2021

Crossrefs

Subsequence of A011538.

Cf. A043489, A043493, A043497, A043501, A043505, A043509, A043513, A043517, A043525, A011538.

Sequence in context: A248015 A011538 A283611 * A277595 A017365 A352735

Adjacent sequences: A043518 A043519 A043520 * A043522 A043523 A043524

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved