Number of parts in all twice partitions of n.

Terms

a(0) =0a(1) =1a(2) =5a(3) =14a(4) =44a(5) =100a(6) =274a(7) =581a(8) =1417a(9) =2978a(10) =6660a(11) =13510a(12) =29479a(13) =58087a(14) =120478a(15) =236850a(16) =476913a(17) =916940a(18) =1812498a(19) =3437043a(20) =6657656a(21) =12512273a(22) =23780682a(23) =44194499a(24) =83117200a(25) =152837210a(26) =283431014a(27) =517571202a(28) =949844843a(29) =1719175176