Total sum of parts of multiplicity 1 in all partitions of n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =6a(4) =10a(5) =21a(6) =33a(7) =59a(8) =89a(9) =145a(10) =212a(11) =325a(12) =463a(13) =680a(14) =948a(15) =1348a(16) =1845a(17) =2558a(18) =3446a(19) =4681a(20) =6219a(21) =8306a(22) =10901a(23) =14352a(24) =18632a(25) =24230a(26) =31151a(27) =40077a(28) =51074a(29) =65088