Even elements in 4-Pascal triangle A028275 (by row).

Terms

a(0) =4a(1) =6a(2) =10a(3) =6a(4) =16a(5) =16a(6) =8a(7) =32a(8) =8a(9) =10a(10) =40a(11) =86a(12) =110a(13) =86a(14) =40a(15) =10a(16) =50a(17) =126a(18) =196a(19) =196a(20) =126a(21) =50a(22) =12a(23) =176a(24) =322a(25) =392a(26) =322a(27) =176a(28) =12a(29) =498