OFFSET
1,2
COMMENTS
The sequence is started with a(1) = 1 and always extended with the smallest integer not yet present and not leading to a contradiction.
LINKS
Jean-Marc Falcoz, Table of n, a(n) for n = 1..3000
EXAMPLE
The set consisting of the first 15 terms is {1,2,3,4,5,6,7,8,9,111,11,101,222,22,122}; we count one 0, nine 1's, eight 2's, one 3, one 4, one 5, etc. All those quantities of digits are nonprime numbers.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Eric Angelini and Jean-Marc Falcoz, Mar 17 2017
STATUS
approved