a(n) = prime(n)^6 - 512.

Terms

a(0) =-448a(1) =217a(2) =15113a(3) =117137a(4) =1771049a(5) =4826297a(6) =24137057a(7) =47045369a(8) =148035377a(9) =594822809a(10) =887503169a(11) =2565725897a(12) =4750103729a(13) =6321362537a(14) =10779214817a(15) =22164360617a(16) =42180533129a(17) =51520373849a(18) =90458381657a(19) =128100283409a(20) =151334225777a(21) =243087455009