a(n) = Product_{d|n} A019565(d)^(1-A008966(n/d)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =1a(6) =1a(7) =6a(8) =2a(9) =1a(10) =1a(11) =12a(12) =1a(13) =1a(14) =1a(15) =30a(16) =1a(17) =6a(18) =1a(19) =20a(20) =1a(21) =1a(22) =1a(23) =540a(24) =2a(25) =1a(26) =12a(27) =60a(28) =1a(29) =1