a(n) = (5*n + 1)*(5*n + 2)*(5*n + 3).

Terms

a(0) =6a(1) =336a(2) =1716a(3) =4896a(4) =10626a(5) =19656a(6) =32736a(7) =50616a(8) =74046a(9) =103776a(10) =140556a(11) =185136a(12) =238266a(13) =300696a(14) =373176a(15) =456456a(16) =551286a(17) =658416a(18) =778596a(19) =912576a(20) =1061106a(21) =1224936a(22) =1404816a(23) =1601496a(24) =1815726a(25) =2048256a(26) =2299836a(27) =2571216a(28) =2863146a(29) =3176376