REFERENCES
- R. Honsberger, Mathematical Gems III. Mathematical Association of America, Washington, DC, 1985.
- D. E. Knuth, The Art of Computer Programming. Second edition. Vol. 1, Addison-Wesley, Reading, MA, 1973.
- M. Merca, Problem 89, Eur. Math. Soc. Newsl. 81 (2011) 59.
- J. M. Quoniam, M. G. Greening, A trigonometric summation, Amer. Math. Monthly 75 (1968) 405–406.
- C. Ramus, Solution generale d'un probleme d'analyse combinatoire, J. Reine Angew. Math. 11 (1834) 353–355.
- J. Riordan, Combinatorial Identities. John Wiley & Sons, New York, 1968.
- T. Simpson, The invention of a general method for determining the sum of every 2d, 3d, 4th, or 5th, &c. Term of a series, taken in order; The sum of the whole series being known, Philosophical Transactions 50 (1757-1758) 757–769, available at http://www.jstor.org/stable/105328.