Hurwitz logarithm of natural numbers 1,2,3,4,5,...

Terms

a(0) =0a(1) =2a(2) =-1a(3) =2a(4) =-6a(5) =24a(6) =-120a(7) =720a(8) =-5040a(9) =40320a(10) =-362880a(11) =3628800a(12) =-39916800a(13) =479001600a(14) =-6227020800a(15) =87178291200