Triangle read by rows, expansion of 1/(1-2*y*x-x+x^2-y*x^2).

Terms

a(0) =1a(1) =1a(2) =2a(3) =0a(4) =5a(5) =4a(6) =-1a(7) =4a(8) =16a(9) =8a(10) =-1a(11) =-3a(12) =25a(13) =44a(14) =16a(15) =0a(16) =-10a(17) =7a(18) =102a(19) =112a(20) =32a(21) =1a(22) =-8a(23) =-41a(24) =97a(25) =344a(26) =272a(27) =64a(28) =1a(29) =4