a(n) is the product of the first n primes congruent to 1 (mod 4).
A006278
a(n) is the product of the first n primes congruent to 1 (mod 4).
Terms
- a(0) =5a(1) =65a(2) =1105a(3) =32045a(4) =1185665a(5) =48612265a(6) =2576450045a(7) =157163452745
External references
- oeis: A006278