Number of compositions (ordered partitions) of n into squarefree divisors of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =5a(5) =2a(6) =25a(7) =2a(8) =34a(9) =19a(10) =129a(11) =2a(12) =1046a(13) =2a(14) =742a(15) =450a(16) =1597a(17) =2a(18) =44254a(19) =2a(20) =27517a(21) =3321a(22) =29967a(23) =2a(24) =1872757a(25) =571a(26) =200390a(27) =18560a(28) =854850a(29) =2