Number of compositions of n whose run-lengths are all different.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =5a(5) =8a(6) =10a(7) =20a(8) =28a(9) =41a(10) =62a(11) =102a(12) =124a(13) =208a(14) =278a(15) =426a(16) =571a(17) =872a(18) =1158a(19) =1718a(20) =2306a(21) =3304a(22) =4402a(23) =6286a(24) =8446a(25) =11725a(26) =15644a(27) =21642a(28) =28636a(29) =38956