Partial alternating sums of Pillai's arithmetical function (A018804).

Terms

a(0) =1a(1) =-2a(2) =3a(3) =-5a(4) =4a(5) =-11a(6) =2a(7) =-18a(8) =3a(9) =-24a(10) =-3a(11) =-43a(12) =-18a(13) =-57a(14) =-12a(15) =-60a(16) =-27a(17) =-90a(18) =-53a(19) =-125a(20) =-60a(21) =-123a(22) =-78a(23) =-178a(24) =-113a(25) =-188a(26) =-107a(27) =-211a(28) =-154a(29) =-289