Least number m such that 4*m^2 + 1 is prime and the next prime of this form is 4*(m + A214518(n))^2 + 1.
A214519
Least number m such that 4*m^2 + 1 is prime and the next prime of this form is 4*(m + A214518(n))^2 + 1.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =20a(4) =47a(5) =92a(6) =175a(7) =248a(8) =1695a(9) =1768a(10) =22685a(11) =41367a(12) =49532a(13) =178582a(14) =420452a(15) =1940278a(16) =13957468a(17) =20258760
External references
- oeis: A214519