Smallest prime == 1 (mod f(n)), where f(n) = concatenation 1,2,3,... up to n.
A109947
Smallest prime == 1 (mod f(n)), where f(n) = concatenation 1,2,3,... up to n.
Terms
- a(0) =2a(1) =13a(2) =739a(3) =4937a(4) =24691a(5) =123457a(6) =29629609a(7) =24691357a(8) =1234567891a(9) =530864193131
External references
- oeis: A109947