Elements to the right of the central elements of the even-Pascal triangle A028326 that are not 2.

Terms

a(0) =6a(1) =8a(2) =20a(3) =10a(4) =30a(5) =12a(6) =70a(7) =42a(8) =14a(9) =112a(10) =56a(11) =16a(12) =252a(13) =168a(14) =72a(15) =18a(16) =420a(17) =240a(18) =90a(19) =20a(20) =924a(21) =660a(22) =330a(23) =110a(24) =22a(25) =1584a(26) =990a(27) =440a(28) =132a(29) =24