Riordan matrix (1/(1-x-x^2),x/(1-x-x^2)^2).

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =1a(6) =3a(7) =9a(8) =5a(9) =1a(10) =5a(11) =22a(12) =20a(13) =7a(14) =1a(15) =8a(16) =51a(17) =65a(18) =35a(19) =9a(20) =1a(21) =13a(22) =111a(23) =190a(24) =140a(25) =54a(26) =11a(27) =1a(28) =21a(29) =233