Partial alternating sums of the sum of the bi-unitary divisors function (A188999).

Terms

a(0) =1a(1) =-2a(2) =2a(3) =-3a(4) =3a(5) =-9a(6) =-1a(7) =-16a(8) =-6a(9) =-24a(10) =-12a(11) =-32a(12) =-18a(13) =-42a(14) =-18a(15) =-45a(16) =-27a(17) =-57a(18) =-37a(19) =-67a(20) =-35a(21) =-71a(22) =-47a(23) =-107a(24) =-81a(25) =-123a(26) =-83a(27) =-123a(28) =-93a(29) =-165