Sum of parts in all partitions of 2n that do not contain 1 as a part.

Terms

a(0) =0a(1) =2a(2) =8a(3) =24a(4) =56a(5) =120a(6) =252a(7) =476a(8) =880a(9) =1584a(10) =2740a(11) =4620a(12) =7680a(13) =12428a(14) =19824a(15) =31170a(16) =48224a(17) =73678a(18) =111384a(19) =166364a(20) =246120a(21) =360822a(22) =524216a(23) =755504a(24) =1080912a(25) =1535050a(26) =2165592a(27) =3036096a(28) =4230632a(29) =5861828