Number of compositions (ordered partitions) of n into parts that do not divide n.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =2a(6) =0a(7) =7a(8) =2a(9) =7a(10) =7a(11) =54a(12) =2a(13) =143a(14) =33a(15) =47a(16) =30a(17) =986a(18) =23a(19) =2583a(20) =58a(21) =1018a(22) =828a(23) =17710a(24) =32a(25) =23866a(26) =3917a(27) =14586a(28) =1368a(29) =317810