Row sums of the Riordan array (1-4x+4x^2, x(1-2x)) (A167431).

Terms

a(0) =1a(1) =-3a(2) =-1a(3) =5a(4) =7a(5) =-3a(6) =-17a(7) =-11a(8) =23a(9) =45a(10) =-1a(11) =-91a(12) =-89a(13) =93a(14) =271a(15) =85a(16) =-457a(17) =-627a(18) =287a(19) =1541a(20) =967a(21) =-2115a(22) =-4049a(23) =181a(24) =8279a(25) =7917a(26) =-8641a(27) =-24475a(28) =-7193a(29) =41757