Riordan array (f(x), x*f(x)) where f(x) is the g.f. of A104455.

Terms

a(0) =1a(1) =4a(2) =1a(3) =17a(4) =8a(5) =1a(6) =77a(7) =50a(8) =12a(9) =1a(10) =371a(11) =290a(12) =99a(13) =16a(14) =1a(15) =1890a(16) =1647a(17) =703a(18) =164a(19) =20a(20) =1a(21) =10095a(22) =9366a(23) =4644a(24) =1380a(25) =245a(26) =24a(27) =1a(28) =56040a(29) =53853