Number of partitions of 2n having twice as many odd parts as even.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =5a(5) =8a(6) =15a(7) =23a(8) =39a(9) =59a(10) =94a(11) =140a(12) =216a(13) =316a(14) =472a(15) =682a(16) =994a(17) =1414a(18) =2022a(19) =2837a(20) =3989a(21) =5530a(22) =7663a(23) =10504a(24) =14381a(25) =19509a(26) =26417a(27) =35510a(28) =47618a(29) =63461