Even numbers to the right of the central numbers of the (1,2)-Pascal triangle A029635.

Terms

a(0) =2a(1) =2a(2) =2a(3) =2a(4) =16a(5) =2a(6) =2a(7) =36a(8) =2a(9) =2a(10) =196a(11) =140a(12) =64a(13) =2a(14) =336a(15) =204a(16) =2a(17) =714a(18) =540a(19) =100a(20) =2a(21) =1254a(22) =2a(23) =2640a(24) =1210a(25) =506a(26) =144a(27) =2a(28) =1716a(29) =650