a(n) is the least prime p such that p^2+4 is a prime times 5^n.
A357435
a(n) is the least prime p such that p^2+4 is a prime times 5^n.
Terms
- a(0) =3a(1) =19a(2) =11a(3) =239a(4) =9011a(5) =61511a(6) =75989a(7) =299011a(8) =4517761a(9) =24830261a(10) =666575989a(11) =2541575989a(12) =41989674011a(13) =147951732239a(14) =455568919739a(15) =174807200989
External references
- oeis: A357435