Riordan array [exp(-x/2)(1-2x)^(-1/4),x].

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =4a(7) =3a(8) =0a(9) =1a(10) =27a(11) =16a(12) =6a(13) =0a(14) =1a(15) =232a(16) =135a(17) =40a(18) =10a(19) =0a(20) =1a(21) =2455a(22) =1392a(23) =405a(24) =80a(25) =15a(26) =0a(27) =1a(28) =30852a(29) =17185