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..1058
EXAMPLE
There are 0 digit between "6" and "60"; there is 1 digit between the "6" of "60" and the "6" of "61" (this is the "0" of "60"); there are 2 digits between the "6" of "61" and the "6" of "62" (they are the "1" of "61" and the "7" of "7"); there are 3 digits between the "6" of "62" and the "6" of "63" (they are the "2" of "62", the "8" of "8" and the "9" of "9"); etc.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Eric Angelini and Jean-Marc Falcoz, Dec 02 2016
STATUS
approved