383578651domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 6*4^n - 12*3^n + 7*2^n - 1.at n=13A091347E.g.f.: Sum_{n>=0} (1 - exp(-n^3*x))^n.at n=4A203798Prime numbersat n=20506613