a(n) is the smallest prime such that it and the previous two primes are all of the form x^2 + n * y^2.
A212603
a(n) is the smallest prime such that it and the previous two primes are all of the form x^2 + n * y^2.
Terms
- a(0) =101a(1) =97a(2) =163a(3) =101a(4) =3061a(5) =1777a(6) =113a(7) =2617a(8) =8353a(9) =419a(10) =4937a(11) =8353a(12) =3457a(13) =34729a(14) =8209a(15) =2617a(16) =53201a(17) =2203a(18) =4253a(19) =12301a(20) =54049a(21) =991a(22) =6803a(23) =232801a(24) =3061a(25) =11491a(26) =739a(27) =2237a(28) =32297a(29) =68329
External references
- oeis: A212603