Half of product of three numbers: n-th prime, previous and following number.

Terms

a(0) =3a(1) =12a(2) =60a(3) =168a(4) =660a(5) =1092a(6) =2448a(7) =3420a(8) =6072a(9) =12180a(10) =14880a(11) =25308a(12) =34440a(13) =39732a(14) =51888a(15) =74412a(16) =102660a(17) =113460a(18) =150348a(19) =178920a(20) =194472a(21) =246480a(22) =285852a(23) =352440a(24) =456288a(25) =515100a(26) =546312a(27) =612468a(28) =647460a(29) =721392