Sum of all parts of all overcompositions of n.

Terms

a(0) =2a(1) =8a(2) =36a(3) =104a(4) =300a(5) =864a(6) =2268a(7) =5824a(8) =14418a(9) =35760a(10) =85888a(11) =204816a(12) =479804a(13) =1113280a(14) =2560560a(15) =5836704a(16) =13209612a(17) =29690208a(18) =66332572a(19) =147350880a(20) =325780056a(21) =716862256a(22) =1571067072a(23) =3429697920a(24) =7461222850a(25) =16178111560a(26) =34973640108a(27) =75392349648