a(n) = n * prime(prime(n)).

Terms

a(0) =3a(1) =10a(2) =33a(3) =68a(4) =155a(5) =246a(6) =413a(7) =536a(8) =747a(9) =1090a(10) =1397a(11) =1884a(12) =2327a(13) =2674a(14) =3165a(15) =3856a(16) =4709a(17) =5094a(18) =6289a(19) =7060a(20) =7707a(21) =8822a(22) =9913a(23) =11064a(24) =12725a(25) =14222a(26) =15201a(27) =16436a(28) =17371a(29) =18510