Number of compositions (ordered partitions) of n into distinct parts >= 3.

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =3a(9) =5a(10) =5a(11) =7a(12) =13a(13) =15a(14) =21a(15) =29a(16) =35a(17) =43a(18) =79a(19) =87a(20) =123a(21) =161a(22) =221a(23) =259a(24) =349a(25) =531a(26) =645a(27) =857a(28) =1115a(29) =1471