Sum of parts, counted without multiplicity, in all compositions of n.

Terms

a(0) =0a(1) =1a(2) =3a(3) =10a(4) =24a(5) =59a(6) =136a(7) =309a(8) =682a(9) =1493a(10) =3223a(11) =6904a(12) =14675a(13) =31013a(14) =65202a(15) =136512a(16) =284748a(17) =592082a(18) =1227709a(19) =2539516a(20) =5241640a(21) =10798133a(22) =22206568a(23) =45597489a(24) =93495667a(25) =191464970a(26) =391636718a(27) =800233551a(28) =1633530732a(29) =3331568080