Exponential Riordan array (e^(x), x*A000108(x)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =21a(8) =9a(9) =1a(10) =1a(11) =184a(12) =90a(13) =16a(14) =1a(15) =1a(16) =2425a(17) =1210a(18) =250a(19) =25a(20) =1a(21) =1a(22) =42396a(23) =21195a(24) =4640a(25) =555a(26) =36a(27) =1a(28) =1a(29) =916909