Number of integer partitions of 2n containing at least one even part.

Terms

a(0) =0a(1) =1a(2) =3a(3) =7a(4) =16a(5) =32a(6) =62a(7) =113a(8) =199a(9) =339a(10) =563a(11) =913a(12) =1453a(13) =2271a(14) =3496a(15) =5308a(16) =7959a(17) =11798a(18) =17309a(19) =25151a(20) =36225a(21) =51748a(22) =73359a(23) =103254a(24) =144363a(25) =200568a(26) =277007a(27) =380437a(28) =519715a(29) =706412