OFFSET
1,1
EXAMPLE
For n=1, a(n)=10; (1-0)=1 thus 1 is the first digit of sequence.
For n=2, a(n)=11; (1-1)=0 thus 0 is the 2nd digit of sequence.
For n=3, a(n)=12; (2-1)=1 thus 1 is the 3rd digit of sequence.
For n=4, a(n)=21; (2-1)=1 thus 1 is the 4th digit of sequence.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Feb 04 2005
STATUS
approved