Reflection of A037027: T(n,m) = U(n,n-m), m=0..n, where U is as in A037027.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =3a(8) =5a(9) =3a(10) =1a(11) =4a(12) =9a(13) =10a(14) =5a(15) =1a(16) =5a(17) =14a(18) =22a(19) =20a(20) =8a(21) =1a(22) =6a(23) =20a(24) =40a(25) =51a(26) =38a(27) =13a(28) =1a(29) =7