Triangle read by rows: T(n,k) is the number of 2-compositions of n having k even entries (0<=k<=n).

Terms

a(0) =1a(1) =0a(2) =2a(3) =1a(4) =0a(5) =6a(6) =0a(7) =8a(8) =0a(9) =16a(10) =3a(11) =0a(12) =35a(13) =0a(14) =44a(15) =0a(16) =28a(17) =0a(18) =132a(19) =0a(20) =120a(21) =8a(22) =0a(23) =160a(24) =0a(25) =460a(26) =0a(27) =328a(28) =0a(29) =92