Triangle, read by antidiagonals, where T(n,k) = C(n+n*k+k, n*k+k).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =10a(8) =5a(9) =1a(10) =1a(11) =35a(12) =28a(13) =7a(14) =1a(15) =1a(16) =126a(17) =165a(18) =55a(19) =9a(20) =1a(21) =1a(22) =462a(23) =1001a(24) =455a(25) =91a(26) =11a(27) =1a(28) =1a(29) =1716