Total number of parts in all overcompositions of n.

Terms

a(0) =0a(1) =2a(2) =6a(3) =24a(4) =66a(5) =180a(6) =496a(7) =1272a(8) =3202a(9) =7798a(10) =18980a(11) =45076a(12) =106288a(13) =246956a(14) =568776a(15) =1299184a(16) =2944654a(17) =6630660a(18) =14838606a(19) =33026000a(20) =73126376a(21) =161198136a(22) =353812612a(23) =773645124a(24) =1685548792a(25) =3660364490a(26) =7924414752a(27) =17107225340a(28) =36832846344a(29) =79107019964