Number of compositions (p0, p1, p2, ...) of n with pi - p0 <= i and pi >= p0.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =8a(6) =14a(7) =25a(8) =46a(9) =87a(10) =167a(11) =324a(12) =634a(13) =1248a(14) =2466a(15) =4887a(16) =9706a(17) =19308a(18) =38455a(19) =76659a(20) =152925a(21) =305232a(22) =609488a(23) =1217429a(24) =2432399a(25) =4860881a(26) =9715511a(27) =19421029a(28) =38826059a(29) =77626471