Number of compositions (ordered partitions) of n into distinct parts, the least being 1.

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =2a(5) =2a(6) =8a(7) =8a(8) =14a(9) =14a(10) =44a(11) =44a(12) =74a(13) =98a(14) =128a(15) =272a(16) =326a(17) =470a(18) =644a(19) =932a(20) =1106a(21) =2234a(22) =2552a(23) =3800a(24) =4958a(25) =7070a(26) =9068a(27) =12140a(28) =20042a(29) =24674