a(n) = A083960(n)/A004151(n).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =176a(12) =10087a(13) =29601a(14) =341a(15) =3851a(16) =418301a(17) =451a(18) =5221a(19) =2a(20) =53391a(21) =1a(22) =1401a(23) =176a(24) =21a(25) =10087a(26) =823063786a(27) =29601a(28) =31801a(29) =3