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A039120 Numbers whose base-10 representation has the same number of 1's and 2's. 0
0, 3, 4, 5, 6, 7, 8, 9, 12, 21, 30, 33, 34, 35, 36, 37, 38, 39, 40, 43, 44, 45, 46, 47, 48, 49, 50, 53, 54, 55, 56, 57, 58, 59, 60, 63, 64, 65, 66, 67, 68, 69, 70, 73, 74, 75, 76, 77, 78, 79, 80, 83, 84, 85, 86, 87, 88, 89, 90, 93, 94, 95, 96, 97, 98, 99, 102, 120, 123 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..69.

MATHEMATICA

Select[Range[0, 150], DigitCount[#, 10, 1]==DigitCount[#, 10, 2]&] (* Harvey P. Dale, Apr 14 2015 *)

CROSSREFS

Sequence in context: A348524 A096829 A265126 * A075493 A096828 A097389

Adjacent sequences:  A039117 A039118 A039119 * A039121 A039122 A039123

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified August 9 18:55 EDT 2022. Contains 356026 sequences. (Running on oeis4.)