Total number of smallest parts in all compositions of n.

Terms

a(0) =1a(1) =3a(2) =6a(3) =15a(4) =31a(5) =72a(6) =155a(7) =340a(8) =738a(9) =1595a(10) =3424a(11) =7335a(12) =15642a(13) =33243a(14) =70432a(15) =148808a(16) =313571a(17) =659188a(18) =1382682a(19) =2894369a(20) =6047397a(21) =12613209a(22) =26265098a(23) =54610722a(24) =113387831a(25) =235117449a(26) =486933645a(27) =1007290340a(28) =2081469759a(29) =4296789924