Least n-digit multiple of n such that the r-th digit is prime if r is a prime else it is composite. The location and value of the most significant digit is 1. 0 if no such number exists.
A113572
Least n-digit multiple of n such that the r-th digit is prime if r is a prime else it is composite. The location and value of the most significant digit is 1. 0 if no such number exists.
Terms
- a(0) =1a(1) =12a(2) =123a(3) =1224a(4) =12245a(5) =122424a(6) =1224265a(7) =12242424a(8) =122424246a(9) =0a(10) =12242424447a(11) =122424244428a(14) =0a(19) =0
External references
- oeis: A113572