Triangular array T given T(n,k)=(1/2)*t(n+1,k+1), 0<=k<=n, n >= 0, t given by A027144.

Terms

a(0) =1a(1) =2a(2) =1a(3) =3a(4) =3a(5) =4a(6) =4a(7) =6a(8) =8a(9) =4a(10) =5a(11) =10a(12) =24a(13) =12a(14) =16a(15) =6a(16) =15a(17) =40a(18) =36a(19) =32a(20) =16a(21) =7a(22) =21a(23) =76a(24) =76a(25) =144a(26) =48a(27) =64a(28) =8a(29) =28