a(n) = A120963(n) + A341711(floor(n/2)).

Terms

a(0) =2a(1) =3a(2) =11a(3) =15a(4) =43a(5) =57a(6) =137a(7) =177a(8) =389a(9) =495a(10) =1003a(11) =1257a(12) =2421a(13) =3003a(14) =5515a(15) =6771a(16) =12011a(17) =14631a(18) =25143a(19) =30399a(20) =50931a(21) =61197a(22) =100161a(23) =119643a(24) =192051a(25) =228255a(26) =359839a(27) =425631a(28) =660623a(29) =778119