a(n) = rad(n*(n+1)*(n+2)*(n+3)).

Terms

a(0) =6a(1) =30a(2) =30a(3) =210a(4) =210a(5) =42a(6) =210a(7) =330a(8) =330a(9) =4290a(10) =6006a(11) =2730a(12) =2730a(13) =3570a(14) =510a(15) =1938a(16) =9690a(17) =3990a(18) =43890a(19) =53130a(20) =10626a(21) =7590a(22) =8970a(23) =390a(24) =2730a(25) =15834a(26) =6090a(27) =188790a(28) =26970a(29) =10230