Partial sums of A050935.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =3a(5) =3a(6) =2a(7) =0a(8) =-2a(9) =-3a(10) =-2a(11) =1a(12) =5a(13) =8a(14) =8a(15) =4a(16) =-3a(17) =-10a(18) =-13a(19) =-9a(20) =2a(21) =16a(22) =26a(23) =25a(24) =10a(25) =-15a(26) =-39a(27) =-48a(28) =-32a(29) =8