Number of compositions (ordered partitions) of n into distinct parts, the least being 7.

Terms

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