Start with 4; thereafter, primes obtained by concatenating to the end of previous term the next smallest number that will produce a prime.

A236528

Start with 4; thereafter, primes obtained by concatenating to the end of previous term the next smallest number that will produce a prime.

Terms

    a(0) =4a(1) =41a(2) =419a(3) =41911a(4) =4191119a(5) =41911193a(6) =419111933a(7) =41911193341

External references