Difference between the sum of odd parts and the sum of even parts in all the partitions of n.

Terms

a(0) =0a(1) =1a(2) =0a(3) =5a(4) =0a(5) =11a(6) =6a(7) =25a(8) =12a(9) =50a(10) =40a(11) =96a(12) =80a(13) =173a(14) =170a(15) =320a(16) =316a(17) =545a(18) =590a(19) =930a(20) =1020a(21) =1552a(22) =1760a(23) =2537a(24) =2900a(25) =4066a(26) =4736a(27) =6450a(28) =7540a(29) =10045