813797domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 2*n*(1 + n + n^2 + n^3) - 3.at n=25A155121a(n) is the least prime of the form Sum_{1<=i<=2*n-1} prime(i+1)*prime(i+k).at n=21A340861Prime numbersat n=64960