OFFSET
0,3
EXAMPLE
The integer after "9" must be even, must start with an even digit and must be the smallest one larger than "9"; only "210" satisfies all requirements. The integer after "210" must be odd, must start with an odd digit and must be the smallest one larger than "210"; only "301" fits, etc.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Apr 27 2008
STATUS
approved