A square array of Motzkin related transforms, read by antidiagonals.

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =2a(8) =2a(9) =1a(10) =0a(11) =4a(12) =6a(13) =3a(14) =1a(15) =0a(16) =9a(17) =20a(18) =12a(19) =4a(20) =1a(21) =0a(22) =21a(23) =72a(24) =54a(25) =20a(26) =5a(27) =1a(28) =0a(29) =51