Column 1 of Inverse partition triangle A038498.

Terms

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