OFFSET
1,1
COMMENTS
No integer ending in 0 or 1 is a member of the sequence.
LINKS
Carole Dubois, Table of n, a(n) for n = 1..14685
EXAMPLE
a(1) cannot be 1 as there is no a(2) whose first digit would be 0
a(1) = 2 and 2 (the last digit) is > 1, this 1 being the first digit of a(2) = 12
a(2) = 12 and 2 (the last digit) is > 1, this 1 being the first digit of a(3) = 13
a(3) = 13 and 3 (the last digit) is > 1, this 1 being the first digit of a(4) = 14
a(4) = 14 and 4 (the last digit) is > 3, this 3 being the first digit of a(5) = 3; etc.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, Jan 30 2020
STATUS
approved