OFFSET
1,2
COMMENTS
All terms of the sequence have an odd number of digits. For terms having only an even number of digits, see the Cross-references section.
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..10000
EXAMPLE
The "central digit" of 1 is 1, of course. The central digit of 100 is 0, the central digit of 123 is 2, etc. Reading the successive central digits of the successive terms produces 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1, 0, 1, 1, 1, 1, 0, 0, sequence, which are exactly the successive digits of the sequence itself.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini, May 25 2019
EXTENSIONS
More terms from Lars Blomberg, May 26 2019
STATUS
approved