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

Terms

a(0) =3a(1) =10a(2) =28a(3) =66a(4) =130a(5) =204a(6) =304a(7) =414a(8) =638a(9) =868a(10) =1110a(11) =1476a(12) =1720a(13) =1974a(14) =2438a(15) =3068a(16) =3538a(17) =4020a(18) =4686a(19) =5110a(20) =5688a(21) =6474a(22) =7298a(23) =8536a(24) =9696a(25) =10300a(26) =10914a(27) =11554a(28) =12204a(29) =14224