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

Terms

a(0) =1a(1) =2a(2) =1a(3) =4a(4) =5a(5) =1a(6) =8a(7) =18a(8) =8a(9) =1a(10) =16a(11) =56a(12) =41a(13) =11a(14) =1a(15) =32a(16) =160a(17) =170a(18) =73a(19) =14a(20) =1a(21) =64a(22) =432a(23) =620a(24) =377a(25) =114a(26) =17a(27) =1a(28) =128a(29) =1120