Number of parts in all partitions of n with largest multiplicity two.

Terms

a(0) =2a(1) =0a(2) =5a(3) =6a(4) =9a(5) =13a(6) =23a(7) =30a(8) =44a(9) =58a(10) =85a(11) =108a(12) =149a(13) =191a(14) =258a(15) =326a(16) =425a(17) =532a(18) =688a(19) =852a(20) =1082a(21) =1331a(22) =1670a(23) =2042a(24) =2531a(25) =3068a(26) =3771a(27) =4554a(28) =5543a(29) =6653