a(0)=1, and for n >= 1, a(n) = p_n * A002110(n) / 2, where p_n is the n-th prime.

A243054

a(0)=1, and for n >= 1, a(n) = p_n * A002110(n) / 2, where p_n is the n-th prime.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =75a(4) =735a(5) =12705a(6) =195195a(7) =4339335a(8) =92147055a(9) =2565568005a(10) =93810551835

External references