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A031950 Numbers with exactly two distinct base-5 digits. 2
5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 25, 26, 30, 32, 33, 34, 36, 37, 41, 43, 46, 49, 50, 52, 56, 57, 60, 61, 63, 64, 67, 68, 72, 74, 75, 78, 81, 83, 87, 88, 90, 91, 92, 94, 98, 99, 100, 104, 106, 109, 112, 114, 118, 119 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[150], Length[Union[IntegerDigits[#, 5]]]==2&] (* Harvey P. Dale, Apr 13 2011 *)
CROSSREFS
Cf. A007091.
Sequence in context: A068213 A065966 A096989 * A043694 A043602 A243624
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved

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Last modified May 22 09:57 EDT 2024. Contains 372745 sequences. (Running on oeis4.)