a(n) = ((n-th prime)^4-(n-th prime)^2)/2.

Terms

a(0) =6a(1) =36a(2) =300a(3) =1176a(4) =7260a(5) =14196a(6) =41616a(7) =64980a(8) =139656a(9) =353220a(10) =461280a(11) =936396a(12) =1412040a(13) =1708476a(14) =2438736a(15) =3943836a(16) =6056940a(17) =6921060a(18) =10073316a(19) =12703320a(20) =14196456a(21) =19471920a(22) =23725716a(23) =31367160a(24) =44259936a(25) =52025100a(26) =56270136