Exponential Riordan array (e^(mx),x*A000108(x)), m=3.

Terms

a(0) =1a(1) =3a(2) =1a(3) =9a(4) =8a(5) =1a(6) =27a(7) =57a(8) =15a(9) =1a(10) =81a(11) =480a(12) =186a(13) =24a(14) =1a(15) =243a(16) =5505a(17) =2550a(18) =450a(19) =35a(20) =1a(21) =729a(22) =87048a(23) =42795a(24) =8760a(25) =915a(26) =48a(27) =1a(28) =2187a(29) =1780569