Riordan array ((1-x)/(1-2*x-x^2), x*(1+x)/(1-2*x-x^2)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =1a(6) =7a(7) =13a(8) =7a(9) =1a(10) =17a(11) =40a(12) =32a(13) =10a(14) =1a(15) =41a(16) =117a(17) =124a(18) =60a(19) =13a(20) =1a(21) =99a(22) =332a(23) =437a(24) =286a(25) =97a(26) =16a(27) =1a(28) =239a(29) =921