a(n) = (prime(n)^6-prime(n)^2)/60.

Terms

a(0) =1a(1) =12a(2) =260a(3) =1960a(4) =29524a(5) =80444a(6) =402288a(7) =784092a(8) =2467256a(9) =9913708a(10) =14791712a(11) =42762084a(12) =79168376a(13) =105356020a(14) =179653552a(15) =369405972a(16) =703008836a(17) =858672844a(18) =1507639628a(19) =2135004648a(20) =2522237016a(21) =4051457488a(22) =5449006108a(23) =8283021384