Even numbers to left of central elements of the (3,2)-Pascal triangle A029618.

Terms

a(0) =8a(1) =14a(2) =26a(3) =40a(4) =20a(5) =90a(6) =26a(7) =100a(8) =224a(9) =322a(10) =126a(11) =324a(12) =546a(13) =32a(14) =450a(15) =870a(16) =1176a(17) =1320a(18) =2046a(19) =38a(20) =222a(21) =792a(22) =3366a(23) =4356a(24) =260a(25) =1014a(26) =7722a(27) =44a(28) =1274a(29) =8008