Sum of the smallest parts of all compositions of n.

Terms

a(0) =1a(1) =3a(2) =6a(3) =12a(4) =22a(5) =42a(6) =79a(7) =151a(8) =291a(9) =566a(10) =1106a(11) =2175a(12) =4293a(13) =8499a(14) =16864a(15) =33523a(16) =66727a(17) =132958a(18) =265137a(19) =529050a(20) =1056169a(21) =2109282a(22) =4213710a(23) =8419697a(24) =16827079a(25) =33634489a(26) =67237513a(27) =134424624a(28) =268768414a(29) =537407062