OFFSET
1,2
LINKS
John Cerkan, Table of n, a(n) for n = 1..10000
PROG
(PARI) isok(n) = Set(binary(n)) == Set(digits(n, 9)); \\ Michel Marcus, Jan 21 2017
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Name edited by John Cerkan, Jan 20 2017
a(28)-a(43) from John Cerkan, Jan 20 2017
STATUS
approved