Sum of the odd parts in the partitions of n into 4 parts.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =3a(6) =8a(7) =9a(8) =22a(9) =26a(10) =50a(11) =59a(12) =100a(13) =114a(14) =168a(15) =197a(16) =284a(17) =329a(18) =438a(19) =504a(20) =660a(21) =748a(22) =946a(23) =1072a(24) =1322a(25) =1488a(26) =1794a(27) =2008a(28) =2408a(29) =2671