OFFSET
1,2
LINKS
John Cerkan, Table of n, a(n) for n = 1..10000
EXAMPLE
1103 is in the sequence because 1103 in base 4 is 101033.
MATHEMATICA
Select[Range[33333], Union[IntegerDigits[#]]==Union[IntegerDigits[#, 4]]&] (* Harvey P. Dale, Jan 01 2023 *)
PROG
(PARI) is(n)=Set(digits(n, 4))==Set(digits(n)) \\ Charles R Greathouse IV, Feb 11 2017
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Corrected by Don Reble, Apr 28 2006
Edited by John Cerkan, Feb 09 2017
STATUS
approved