OFFSET
1,2
LINKS
John Cerkan, Table of n, a(n) for n = 1..10000
PROG
(PARI) isok(n) = Set(digits(n, 6)) == Set(digits(n, 7)); \\ Michel Marcus, Jan 21 2017
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Edited by Don Reble, Apr 28 2006
Further edited by N. J. A. Sloane, Jan 17 2009 at the suggestion of R. J. Mathar
STATUS
approved