CONTINUANT transform of {d(n)}, 1, 2, 2, 3, 2, 4, ... (A000005).

Terms

a(0) =1a(1) =3a(2) =7a(3) =24a(4) =55a(5) =244a(6) =543a(7) =2416a(8) =7791a(9) =33580a(10) =74951a(11) =483286a(12) =1041523a(13) =4649378a(14) =19639035a(15) =102844553a(16) =225328141a(17) =1454813399a(18) =3134954939a(19) =20264543033a(20) =84193127071a(21) =357037051317a(22) =798267229705