Noam D. Elkies. On the Sums. The American Mathematical Monthly, 110(7):561-573, 2003. [doi]
@article{Elkies03, title = {On the Sums}, author = {Noam D. Elkies}, year = {2003}, url = {http://www.jstor.org/stable/3647742}, researchr = {https://researchr.org/publication/Elkies03}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {110}, number = {7}, pages = {561-573}, }