Column 4 of inverse partition triangle A038498.

Terms

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