Number of compositions (ordered partitions) of n into distinct parts >= 2.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =5a(8) =5a(9) =13a(10) =13a(11) =21a(12) =27a(13) =35a(14) =65a(15) =79a(16) =109a(17) =147a(18) =207a(19) =245a(20) =449a(21) =517a(22) =745a(23) =957a(24) =1335a(25) =1691a(26) =2237a(27) =3463a(28) =4273a(29) =5787