Number of parts in all partitions of 2n that do not contain 1 as a part.

Terms

a(0) =0a(1) =1a(2) =3a(3) =8a(4) =17a(5) =34a(6) =68a(7) =123a(8) =219a(9) =382a(10) =642a(11) =1055a(12) =1713a(13) =2713a(14) =4241a(15) =6545a(16) =9950a(17) =14953a(18) =22255a(19) =32752a(20) =47774a(21) =69104a(22) =99114a(23) =141094a(24) =199489a(25) =280096a(26) =390836a(27) =542170a(28) =747793a(29) =1025912