Triangle read by rows: A007318^(-1) * A128540.

Terms

a(0) =1a(1) =0a(2) =1a(3) =-1a(4) =0a(5) =2a(6) =2a(7) =-3a(8) =-3a(9) =3a(10) =-3a(11) =8a(12) =0a(13) =-7a(14) =5a(15) =4a(16) =-15a(17) =10a(18) =5a(19) =-17a(20) =8a(21) =-5a(22) =24a(23) =-30a(24) =15a(25) =27a(26) =-35a(27) =13a(28) =6a(29) =-35