Riordan array read by rows, corresponding to g.f. (1+x*y^3)/((1-x-y)*(1+x*y^3)+x*y^4).

Terms

a(0) =1a(1) =2a(2) =1a(3) =6a(4) =3a(5) =1a(6) =20a(7) =10a(8) =4a(9) =1a(10) =66a(11) =35a(12) =15a(13) =5a(14) =1a(15) =222a(16) =121a(17) =56a(18) =21a(19) =6a(20) =1a(21) =756a(22) =420a(23) =204a(24) =84a(25) =28a(26) =7a(27) =1a(28) =2598a(29) =1464