Nonzero terms of Product_{k=0..floor(log_2(n))} (1 + A004718(floor(n/(2^k)))).

Terms

a(0) =1a(1) =2a(2) =6a(3) =-6a(4) =24a(5) =-18a(6) =-48a(7) =120a(8) =18a(9) =-72a(10) =-192a(11) =48a(12) =-360a(13) =720a(14) =54a(15) =144a(16) =-360a(17) =384a(18) =-960a(19) =144a(20) =-1800a(21) =720a(22) =-2880a(23) =5040a(24) =-54a(25) =216a(26) =576a(27) =-144a(28) =1080a(29) =-2160