OFFSET
1,2
COMMENTS
An example of transition complete sequences, when n <= 9. One needs to consider the base 10 complications when n >= 10. The number of digits is given by d(n)=d(n-1)+2n-2 which is A002061.
EXAMPLE
a(4)=1213231424341=1213231 + 4 2 4 3 4 1.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Douglas Stones (dssto1(AT)student.monash.edu.au), Oct 03 2006
STATUS
approved