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A146028 Numbers that can be written from base 2 to base 15 using only the digits 0 to 7. 4
0, 1, 2, 3, 4, 5, 6, 7, 15, 16, 174731235562130, 174731235562131, 174731235562132, 174731235562143, 174731235562147, 174731235562170, 174731235562171, 174731235564710, 174731235564711, 174731236371006, 25354527232277132536350, 25354527232277132536351 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

It is a plausible conjecture that there are no more terms, but this has not been proved. - N. J. A. Sloane, Nov 17 2017

LINKS

Table of n, a(n) for n=1..22.

Stuart A. Burrell, Han Yu, Digit expansions of numbers in different bases, arXiv:1905.00832 [math.NT], 2019.

MATHEMATICA

Select[Range[0, 10^5], Function[n, Times @@ Boole@ Map[Max@ IntegerDigits[n, #] <= 7 &, Range[2, 15]] > 0]] (* Michael De Vlieger, Aug 15 2016 *)

CROSSREFS

Cf. A146025, A146026, A146027, A146029, A131646, A275600.

Sequence in context: A273734 A115308 A171649 * A263469 A165804 A055402

Adjacent sequences:  A146025 A146026 A146027 * A146029 A146030 A146031

KEYWORD

nonn,base

AUTHOR

Daniel Mondot, Nov 02 2008, Nov 06 2008

STATUS

approved

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Last modified August 19 20:20 EDT 2019. Contains 326133 sequences. (Running on oeis4.)