OFFSET
1,2
EXAMPLE
a(1) + a(2) = 1 + 9 = 10 and the initial 1 of 10 is the 1st digit of the sequence;
a(2) + a(3) = 9 + 81 = 90 and the initial 9 of 90 is the 2nd digit of the sequence;
a(3) + a(4) = 81 + 2 = 83 and the initial 8 of 83 is the 3rd digit of the sequence;
a(4) + a(5) = 2 + 8 = 10 and the initial 1 of 10 is the 4th digit of the sequence;
a(5) + a(6) = 8 + 12 = 20 and the initial 2 of 20 is the 5th digit of the sequence; etc.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, Mar 14 2022
STATUS
approved