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

Terms

a(0) =9a(1) =20a(2) =42a(3) =88a(4) =156a(5) =238a(6) =342a(7) =460a(8) =696a(9) =930a(10) =1184a(11) =1558a(12) =1806a(13) =2068a(14) =2544a(15) =3186a(16) =3660a(17) =4154a(18) =4828a(19) =5256a(20) =5846a(21) =6640a(22) =7476a(23) =8730a(24) =9898a(25) =10506a(26) =11128a(27) =11772a(28) =12430a(29) =14478