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A270041 a(n) = Smallest m >= 11 containing no fives when represented in any base from 6 through n. 10
12, 13, 14, 15, 16, 18, 18, 20, 20, 22, 22, 24, 24, 28, 28, 28, 28, 144, 144, 160, 160, 162, 216, 216, 216, 216, 216, 216, 216, 216, 216, 223, 228, 316, 316, 316, 316, 316, 316, 316, 316, 316, 316, 316, 316, 316, 316, 487, 487 (list; graph; refs; listen; history; text; internal format)
OFFSET
6,1
COMMENTS
It remains to be determined if the sequence is finite.
LINKS
MATHEMATICA
Table[SelectFirst[Range[11, 10^3], Total@ Map[Function[k, DigitCount[#, k, 5]], Range[6, n]] == 0 &], {n, 6, 60}] /. n_ /; MissingQ@ n -> Nothing (* Michael De Vlieger, Mar 10 2016, Version 10.2 *)
CROSSREFS
Sequence in context: A343888 A331214 A364733 * A272270 A133894 A209725
KEYWORD
nonn,base
AUTHOR
Nathan Fox, Mar 09 2016
STATUS
approved

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Last modified April 23 07:16 EDT 2024. Contains 371905 sequences. (Running on oeis4.)