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A039126 Numbers whose base-10 representation has the same number of 1's and 8's. 1
0, 2, 3, 4, 5, 6, 7, 9, 18, 20, 22, 23, 24, 25, 26, 27, 29, 30, 32, 33, 34, 35, 36, 37, 39, 40, 42, 43, 44, 45, 46, 47, 49, 50, 52, 53, 54, 55, 56, 57, 59, 60, 62, 63, 64, 65, 66, 67, 69, 70, 72, 73, 74, 75, 76, 77, 79, 81, 90, 92, 93, 94, 95, 96, 97, 99, 108, 128, 138 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..5000

MATHEMATICA

Select[Range[0, 500], DigitCount[#, 10, 1] == DigitCount[#, 10, 8] &]  (* G. C. Greubel, Nov 01 2017 *)

PROG

(PARI) isok(n) = my(d=digits(n)); #select(x->(x==1), d) == #select(x->(x==8), d); \\ Michel Marcus, Nov 01 2017

CROSSREFS

Sequence in context: A271950 A263482 A030153 * A083376 A044957 A297142

Adjacent sequences:  A039123 A039124 A039125 * A039127 A039128 A039129

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified October 22 05:36 EDT 2021. Contains 348160 sequences. (Running on oeis4.)