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A270042 a(n) = Smallest m >= 13 containing no sixes when represented in any base from 7 through n. 10
14, 15, 16, 17, 18, 19, 21, 21, 23, 23, 25, 25, 29, 29, 29, 29, 31, 31, 35, 35, 35, 35, 37, 37, 228, 228, 232, 271, 271, 271, 271, 271, 273, 343, 343, 343, 343, 343, 343, 343, 343, 343, 343, 451, 451, 451, 451, 451, 451, 451, 451, 451, 451, 451, 451, 451, 451, 451, 455, 472, 472, 599 (list; graph; refs; listen; history; text; internal format)
OFFSET
7,1
COMMENTS
It remains to be determined if the sequence is finite.
LINKS
MATHEMATICA
Table[SelectFirst[Range[13, 10^3], Total@ Map[Function[k, DigitCount[#, k, 6]], Range[7, n]] == 0 &], {n, 7, 68}] /. n_ /; MissingQ@ n -> Nothing (* Michael De Vlieger, Mar 10 2016, Version 10.2 *)
CROSSREFS
Sequence in context: A089838 A297278 A296748 * A332924 A048125 A163482
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.)