Sum of unitary divisors of central binomial coefficient C(n, floor(n/2)).

Terms

a(0) =1a(1) =3a(2) =4a(3) =12a(4) =18a(5) =30a(6) =48a(7) =144a(8) =240a(9) =400a(10) =1152a(11) =1920a(12) =3360a(13) =6048a(14) =10080a(15) =30240a(16) =54432a(17) =90720a(18) =181440a(19) =302400a(20) =806400a(21) =1451520a(22) =2903040a(23) =4838400a(24) =8985600a(25) =16174080a(26) =31449600a(27) =56609280a(28) =139968000a(29) =264384000