a(n) = prime(n)^3 - 2.

Terms

a(0) =6a(1) =25a(2) =123a(3) =341a(4) =1329a(5) =2195a(6) =4911a(7) =6857a(8) =12165a(9) =24387a(10) =29789a(11) =50651a(12) =68919a(13) =79505a(14) =103821a(15) =148875a(16) =205377a(17) =226979a(18) =300761a(19) =357909a(20) =389015a(21) =493037a(22) =571785a(23) =704967a(24) =912671a(25) =1030299a(26) =1092725a(27) =1225041a(28) =1295027a(29) =1442895