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A309566
a(n) is the least prime that can be written as a sequence of primes separated by n single zeros, and where every 0-splitting is prime.
1
307, 130307, 309370307, 30281172370306703
OFFSET
1,1
EXAMPLE
a(1) = 307 = A309101(1).
130307 is a term since 3, 7, 13, 307, 1303, 130307 are all prime.
CROSSREFS
Subsequence of A309101.
Cf. A000040 (primes), A038618 (zeroless primes), A056709 (primes with zeros).
Sequence in context: A118284 A234030 A359641 * A118843 A224675 A249552
KEYWORD
nonn,base,fini,full
AUTHOR
Michel Marcus, Aug 08 2019
EXTENSIONS
a(4) from Daniel Suteu and Giovanni Resta, Aug 09 2019
STATUS
approved