Number of even parts in all partitions of n into distinct parts.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =4a(7) =5a(8) =5a(9) =8a(10) =11a(11) =14a(12) =18a(13) =23a(14) =29a(15) =37a(16) =44a(17) =55a(18) =69a(19) =83a(20) =102a(21) =124a(22) =148a(23) =178a(24) =213a(25) =253a(26) =300a(27) =356a(28) =421a(29) =494