Riordan array (1-4x, x(1-x)^3).

Terms

a(0) =1a(1) =-4a(2) =1a(3) =0a(4) =-7a(5) =1a(6) =0a(7) =15a(8) =-10a(9) =1a(10) =0a(11) =-13a(12) =39a(13) =-13a(14) =1a(15) =0a(16) =4a(17) =-80a(18) =72a(19) =-16a(20) =1a(21) =0a(22) =0a(23) =95a(24) =-228a(25) =114a(26) =-19a(27) =1a(28) =0a(29) =0