OFFSET
1,3
COMMENTS
The sequence starts with a(1) = 0 and is always extended with the smallest integer not yet present that does not lead to a contradiction.
LINKS
Jean-Marc Falcoz, Table of n, a(n) for n = 1..1053
EXAMPLE
There are 0 digit between "1" and "10"; there is 1 digit between the "1" of "10" and the "1" of "12" (this is the "0" of "10"); there are 2 digits between the "1" of "12" and the "1" of "13" (they are the "2" of "12" and the "2" of "2"); there are 3 digits between the "1" of "13" and the "1" of "14" (they are the "3" of "13", the "3" of "3" and the "4" of "4"); etc.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Eric Angelini and Jean-Marc Falcoz, Nov 29 2016
STATUS
approved