Numerators of Dirichlet inverse of fraction A003961(n) / sigma(n).

Terms

a(0) =1a(1) =-1a(2) =-5a(3) =-2a(4) =-7a(5) =5a(6) =-11a(7) =-8a(8) =-75a(9) =7a(10) =-13a(11) =5a(12) =-17a(13) =11a(14) =35a(15) =-1648a(16) =-19a(17) =75a(18) =-23a(19) =1a(20) =55a(21) =13a(22) =-29a(23) =2a(24) =-245a(25) =17a(26) =-225a(27) =11a(28) =-31a(29) =-35