a(n) = A000032(n)*A000032(n+1) mod A000032(n+2).

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =5a(5) =24a(6) =5a(7) =71a(8) =5a(9) =194a(10) =5a(11) =516a(12) =5a(13) =1359a(14) =5a(15) =3566a(16) =5a(17) =9344a(18) =5a(19) =24471a(20) =5a(21) =64074a(22) =5a(23) =167756a(24) =5a(25) =439199a(26) =5a(27) =1149846a(28) =5a(29) =3010344