The logarithmic transform of sigma(n).

Terms

a(0) =1a(1) =2a(2) =-3a(3) =-6a(4) =45a(5) =11a(6) =-1372a(7) =4298a(8) =59244a(9) =-573463a(10) =-2432023a(11) =75984243a(12) =-136498141a(13) =-10881169822a(14) =100704750342