OFFSET
1,2
EXAMPLE
a(1) * a(2) = 1 * 11 = 11 and the initial 1 of 11 is the 1st digit of the sequence;
a(2) * a(3) = 11 * 12 = 132 and the initial 1 of 132 is the 2nd digit of the sequence;
a(3) * a(4) = 12 * 9 = 108 and the initial 1 of 108 is the 3rd digit of the sequence;
a(4) * a(5) = 9 * 2 = 18 and the initial 1 of 16 is the 4th digit of the sequence;
a(5) * a(6) = 2 * 13 = 26 and the initial 2 of 26 is the 5th digit of the sequence; etc.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, Mar 14 2022
STATUS
approved