a(n) = (prime(n)+1)*n.

Terms

a(0) =0a(1) =3a(2) =8a(3) =18a(4) =32a(5) =60a(6) =84a(7) =126a(8) =160a(9) =216a(10) =300a(11) =352a(12) =456a(13) =546a(14) =616a(15) =720a(16) =864a(17) =1020a(18) =1116a(19) =1292a(20) =1440a(21) =1554a(22) =1760a(23) =1932a(24) =2160a(25) =2450a(26) =2652a(27) =2808a(28) =3024a(29) =3190