Number of partitions of n having twice as many even parts as odd.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =0a(7) =2a(8) =0a(9) =4a(10) =1a(11) =6a(12) =2a(13) =9a(14) =5a(15) =13a(16) =9a(17) =18a(18) =17a(19) =25a(20) =28a(21) =35a(22) =46a(23) =49a(24) =70a(25) =70a(26) =107a(27) =101a(28) =156a(29) =145