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

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =2a(7) =0a(8) =5a(9) =1a(10) =2a(11) =0a(12) =50a(13) =0a(14) =2a(15) =2a(16) =55a(17) =0a(18) =185a(19) =0a(20) =243a(21) =2a(22) =2a(23) =0a(24) =8903a(25) =1a(26) =2a(27) =19a(28) =1219a(29) =0