Inverse of renewal array for central trinomial numbers.

Terms

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