Primes that are the concatenation of k 1's, the digits of k^2 + k + 1, and k 1's.
A263299
Primes that are the concatenation of k 1's, the digits of k^2 + k + 1, and k 1's.
Terms
- a(0) =131a(1) =11113111a(2) =1111211111a(3) =111113111111
External references
- oeis: A263299