Sum of largest parts of all partitions of n into an even number of parts.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =6a(5) =9a(6) =18a(7) =26a(8) =45a(9) =62a(10) =99a(11) =135a(12) =204a(13) =274a(14) =396a(15) =527a(16) =741a(17) =973a(18) =1333a(19) =1736a(20) =2331a(21) =3007a(22) =3970a(23) =5079a(24) =6615a(25) =8393a(26) =10796a(27) =13605a(28) =17320a(29) =21673