Binary order of n plus number of partitions of n-1.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =10a(6) =14a(7) =18a(8) =26a(9) =34a(10) =46a(11) =60a(12) =81a(13) =105a(14) =139a(15) =180a(16) =236a(17) =302a(18) =390a(19) =495a(20) =632a(21) =797a(22) =1007a(23) =1260a(24) =1580a(25) =1963a(26) =2441a(27) =3015a(28) =3723a(29) =4570