A039141 Numbers whose base-10 representation has the same number of 4's and 5's.

0, 1, 2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 22, 23, 26, 27, 28, 29, 30, 31, 32, 33, 36, 37, 38, 39, 45, 54, 60, 61, 62, 63, 66, 67, 68, 69, 70, 71, 72, 73, 76, 77, 78, 79, 80, 81, 82, 83, 86, 87, 88, 89, 90, 91, 92, 93, 96, 97, 98, 99, 100, 101, 102

Offset

1,3

Links

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

Mathematica

Select[Range[0, 120], DigitCount[#, 10, 4]==DigitCount[#, 10, 5]&] (* Harvey P. Dale, Aug 29 2021 *)

Crossrefs

Sequence in context: A039247 A371292 A039189 * A008541 A060464 A039102

Adjacent sequences: A039138 A039139 A039140 * A039142 A039143 A039144

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved