Möbius transform of A003964.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =2a(6) =6a(7) =4a(8) =6a(9) =4a(10) =10a(11) =4a(12) =14a(13) =6a(14) =8a(15) =8a(16) =21a(17) =6a(18) =29a(19) =8a(20) =12a(21) =10a(22) =41a(23) =8a(24) =20a(25) =14a(26) =18a(27) =12a(28) =55a(29) =8