OFFSET
1,3
MATHEMATICA
Select[Select[Select[Select[Range[0, 400], FreeQ[IntegerDigits@#, 2] &], FreeQ[IntegerDigits@#, 4] &], FreeQ[IntegerDigits@#, 6] &], FreeQ[IntegerDigits@#, 8] &]
PROG
(Magma) [n: n in [0..500] | IsEmpty(Set([2..8 by 2]) meet Set(Intseq(n)))];
(PARI) my(table=[0, 1, 3, 5, 7, 9]); a(n) = fromdigits(apply(d->table[d+1], digits(n-1, 6))); \\ Kevin Ryde, Jun 26 2021
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Vincenzo Librandi, Aug 22 2016
STATUS
approved