Primes of form x^2+1 where x = LCM(1,2,...,k) for some k.

A053609

Primes of form x^2+1 where x = LCM(1,2,...,k) for some k.

Terms

    a(0) =2a(1) =5a(2) =37a(3) =176401a(4) =129859329601

External references