a(n) is the least prime p such that p + 4*k*(k+1) is prime for 0 <= k <= n-1 but not for k=n.
A371024
a(n) is the least prime p such that p + 4*k*(k+1) is prime for 0 <= k <= n-1 but not for k=n.
Terms
- a(0) =2a(1) =3a(2) =29a(3) =5a(4) =23a(5) =269a(6) =272879a(7) =149a(8) =61463a(9) =929a(10) =7426253a(11) =2609a(12) =233a(13) =59
External references
- oeis: A371024