Number of compositions (ordered partitions) of n into distinct parts.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =5a(6) =11a(7) =13a(8) =19a(9) =27a(10) =57a(11) =65a(12) =101a(13) =133a(14) =193a(15) =351a(16) =435a(17) =617a(18) =851a(19) =1177a(20) =1555a(21) =2751a(22) =3297a(23) =4757a(24) =6293a(25) =8761a(26) =11305a(27) =15603a(28) =24315a(29) =30461