OFFSET
1,2
COMMENTS
The subsequence of A108571 consisting of all terms that have at most one even and at most one odd digit (which of course may appear several times; otherwise said, no two different odd and no two different even digits are allowed). - M. F. Hasler, Sep 22 2014
EXAMPLE
Integer 122 has 1 odd digit (1) and 2 even digits (2 and 2).
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, May 04 2005
EXTENSIONS
More terms from M. F. Hasler, Sep 22 2014
STATUS
approved