OFFSET
1,1
COMMENTS
EXAMPLE
19 is generated where 9 meets 10, 12345678(91)01112131415161718(19)20...
21 is generated by 1 and 2: (12)34567891011121314151617181920(21)22...
29 is generated where 19 joins 20: 1234567891011121314151617181(92)02122232425262728(29)30...
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Paolo P. Lava & Giorgio Balzarotti, Jun 21 2010
EXTENSIONS
Definition shortened, examples detailed, keyword:base added by R. J. Mathar, Jul 13 2010
STATUS
approved