OFFSET
1,2
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
EXAMPLE
38 in base 7 is 53_7. All the digits of 38 in base 7; 5 and 3; are odd. So 38 is in the sequence. - David A. Corneth, Aug 24 2019
MATHEMATICA
Select[Range[600], AllTrue[IntegerDigits[#, 7], OddQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Sep 28 2014 *)
PROG
(PARI) is(n) = {my(d = Set(digits(n, 7))); for(i = 1, #d, if(d[i]%2 == 0, return(0))); 1} \\ David A. Corneth, Aug 24 2019
(Magma) [m:m in [1..600]| Intseq(m, 7) subset {1, 3, 5}]; // Marius A. Burtea, Aug 24 2019
CROSSREFS
KEYWORD
nonn,easy,base
AUTHOR
STATUS
approved