OFFSET
0,2
COMMENTS
The representation n = 11_(n-1) is not accepted under the definition of a Brazilian number.
The records of this sequence are the highly Brazilian numbers; hence, this sequence is a supersequence of A329383.
REFERENCES
D. Lignon, Dictionnaire de (presque) tous les nombres entiers, Ellipses, 2012, page 420.
LINKS
Giovanni Resta, Table of n, a(n) for n = 0..100
EXAMPLE
a(0) = 1 because 1 is the smallest non-Brazilian number.
a(4) = 40 because 40 = 1111_3 = 55_7 = 44_9 = 22_19 and 40 is the smallest integer with four Brazilian representations.
MATHEMATICA
rep[n_] := Length@ Select[Range[2, n/2], 1 == Length@ Union@ IntegerDigits[n, #] &]; a[n_] := Block[{k=1}, While[rep[k] != n, k++]; k]; a /@ Range[0, 15] (* Giovanni Resta, Apr 04 2017 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Bernard Schott, Apr 04 2017
STATUS
approved