Number of partitions in all twice partitions of n where the second partition is strict.

Terms

a(0) =0a(1) =1a(2) =3a(3) =7a(4) =15a(5) =29a(6) =60a(7) =108a(8) =201a(9) =364a(10) =643a(11) =1106a(12) =1944a(13) =3253a(14) =5493a(15) =9183a(16) =15161a(17) =24727a(18) =40559a(19) =65173a(20) =104963a(21) =167747a(22) =266452a(23) =420329a(24) =663658a(25) =1036765a(26) =1618221a(27) =2514169a(28) =3891121a(29) =5992868