Square table read by downward antidiagonals: n-th row has e.g.f. (1-9*x)^(-n/9).

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =10a(8) =2a(9) =1a(10) =0a(11) =190a(12) =22a(13) =3a(14) =1a(15) =0a(16) =5320a(17) =440a(18) =36a(19) =4a(20) =1a(21) =0a(22) =196840a(23) =12760a(24) =756a(25) =52a(26) =5a(27) =1a(28) =0a(29) =9054640