OFFSET
1,2
EXAMPLE
The 9th integer of the sequence is 15; 15 is the sum of 8 and 7, this 7 being the 8th digit of the sequence.
The 22nd integer of the sequence is 22; 22 is the sum of 21 and 1, this 1 being the 21st digit of the sequence.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Jan 17 2005
STATUS
approved