a(n) the smallest positive integer such that a(n)+10^k is prime for k=1,2...n.

A124116

a(n) the smallest positive integer such that a(n)+10^k is prime for k=1,2...n.

Terms

    a(0) =1a(1) =1a(2) =9a(3) =9a(4) =559a(5) =847a(6) =15127a(7) =54621a(8) =54621a(9) =5893321a(10) =167459299a(11) =3595903759a(12) =3595903759

External references