OFFSET
1,2
COMMENTS
Exactly every other term, and also every other digit (in concatenated terms) is prime.
LINKS
Carole Dubois, Table of n, a(n) for n = 1..5292
E. Angelini, Non-primes/primes: integers and digits alternate, SeqFan mailing list, Oct 06 2012
Carole Dubois, Graph with even ranges and odd ranges separated
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Eric Angelini and M. F. Hasler, Oct 06 2012
EXTENSIONS
Values from a(26)=43 on corrected by Jean-Marc Falcoz, Oct 10 2012
STATUS
approved