login
A105776
Self-describing integers with the rule: if the digit d, part of the integer i, is odd then there are d odd digits in this integer; if the digit d is even there are d even digits.
1
1, 22, 122, 212, 221, 333, 4444, 14444, 22333, 23233, 23323, 23332, 32233, 32323, 32332, 33223, 33232, 33322, 41444, 44144, 44414, 44441, 555555, 666666, 1666666, 2255555, 2525555, 2552555, 2555255, 2555525, 2555552, 3334444, 3343444, 3344344, 3344434, 3344443
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
Cf. A108571.
Sequence in context: A043498 A108571 A247700 * A044354 A140057 A044735
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, May 04 2005
EXTENSIONS
More terms from M. F. Hasler, Sep 22 2014
STATUS
approved