OFFSET
1,1
COMMENTS
223 is the first term in A141409 which is not in this sequence.
In this sequence, a prime preceded by one or more zeros is not considered to be a prime.
EXAMPLE
59 is in the sequence because 5 is prime but 9 is not prime.
223 is not in the sequence because both 2 and 23 are primes.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Colin Barker, Mar 02 2014
STATUS
approved