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A039086
Numbers whose base-9 representation has the same number of 1's and 4's.
0
0, 2, 3, 5, 6, 7, 8, 13, 18, 20, 21, 23, 24, 25, 26, 27, 29, 30, 32, 33, 34, 35, 37, 45, 47, 48, 50, 51, 52, 53, 54, 56, 57, 59, 60, 61, 62, 63, 65, 66, 68, 69, 70, 71, 72, 74, 75, 77, 78, 79, 80, 85, 103, 112, 117, 119, 120, 122, 123, 124, 125, 130, 139, 148, 157, 162
OFFSET
1,2
MATHEMATICA
Select[Range[0, 200], DigitCount[#, 9, 1]==DigitCount[#, 9, 4]&] (* Harvey P. Dale, Dec 26 2014 *)
CROSSREFS
Cf. A007095.
Sequence in context: A062877 A068526 A287339 * A280060 A197433 A153781
KEYWORD
nonn,base,easy
STATUS
approved