Triangle T(n,m) read by rows: Sum_{k=1..m} binomial(2*n, n+k)*d(k), m<=n, with d(k)=A000005(k).

Terms

a(0) =1a(1) =4a(2) =6a(3) =15a(4) =27a(5) =29a(6) =56a(7) =112a(8) =128a(9) =131a(10) =210a(11) =450a(12) =540a(13) =570a(14) =572a(15) =792a(16) =1782a(17) =2222a(18) =2420a(19) =2444a(20) =2448a(21) =3003a(22) =7007a(23) =9009a(24) =10101a(25) =10283a(26) =10339a(27) =10341a(28) =11440a(29) =27456