Number of integer compositions of n with all distinct first sums.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =16a(7) =27a(8) =44a(9) =73a(10) =114a(11) =191a(12) =302a(13) =473a(14) =728a(15) =1183a(16) =1800a(17) =2769a(18) =4198a(19) =6555a(20) =9850a(21) =14941a(22) =22284a(23) =33467a(24) =50276a(25) =74741a(26) =110322a(27) =162019a(28) =238638a(29) =350809