a(n) = mu(n) * A000217(n).

Terms

a(0) =1a(1) =-3a(2) =-6a(3) =0a(4) =-15a(5) =21a(6) =-28a(7) =0a(8) =0a(9) =55a(10) =-66a(11) =0a(12) =-91a(13) =105a(14) =120a(15) =0a(16) =-153a(17) =0a(18) =-190a(19) =0a(20) =231a(21) =253a(22) =-276a(23) =0a(24) =0a(25) =351a(26) =0a(27) =0a(28) =-435a(29) =-465