a(n) = A143176(n)/n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =6a(6) =12a(7) =15a(8) =20a(9) =24a(10) =60a(11) =60a(12) =120a(13) =90a(14) =112a(15) =180a(16) =360a(17) =280a(18) =840a(19) =504a(20) =720a(21) =1260a(22) =5040a(23) =3465a(24) =5544a(25) =7560a(26) =11200a(27) =9900a(28) =27720a(29) =16632