Numerators of the partial alternating sums of the reciprocals of the sum of divisors function (A000203).

A357845

Numerators of the partial alternating sums of the reciprocals of the sum of divisors function (A000203).

Terms

    a(0) =1a(1) =2a(2) =11a(3) =65a(4) =79a(5) =6a(6) =55a(7) =769a(8) =10837a(9) =30691a(10) =33421a(11) =32251a(12) =34591a(13) =16613a(14) =34591a(15) =1039561a(16) =365327a(17) =356647a(18) =373573a(19) =365513a(20) =1504367a(21) =4400261a(22) =4569521a(23) =4501817a(24) =149447a(25) =146327a(26) =149603a(27) =147263a(28) =151631a(29) =49937

External references