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A031470
Numbers whose base-5 representation has the same number of 0's as 4's.
0
1, 2, 3, 6, 7, 8, 11, 12, 13, 16, 17, 18, 20, 29, 31, 32, 33, 36, 37, 38, 41, 42, 43, 45, 54, 56, 57, 58, 61, 62, 63, 66, 67, 68, 70, 79, 81, 82, 83, 86, 87, 88, 91, 92, 93, 95, 101, 102, 103, 105, 110, 115, 134, 139, 144, 146, 147, 148
OFFSET
1,2
MATHEMATICA
Select[Range[200], DigitCount[#, 5, 0]==DigitCount[#, 5, 4]&] (* Harvey P. Dale, May 30 2019 *)
CROSSREFS
Cf. A007091.
Sequence in context: A015841 A371276 A175893 * A047223 A004435 A008321
KEYWORD
nonn,base
STATUS
approved