Triangle read by rows: T(n,k) = binomial(k,n-k).

Terms

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