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

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =1a(8) =1a(9) =1a(10) =2a(11) =1a(12) =12a(13) =1a(14) =2a(15) =2a(16) =1a(17) =1a(18) =65a(19) =1a(20) =23a(21) =2a(22) =2a(23) =1a(24) =351a(25) =1a(26) =2a(27) =1a(28) =38a(29) =1