References
- Barbeau, E. J., Klamkin, M. S., Moser, W. O. J. (1995). Five Hundred Mathematical Challenges. MAA Spectrum.
- Hale, C. G., Kelleher, J. R., Mayer, J. C. (2019). Poster: Multiplicity of Hexagon Numbers. MAA Mathfest.
- Hertel, E. (2013). Reguläre Dreieckspflasterungen konvexer Polygone. Jenaer Schriften zur Mathematik und Informatik. Math/Inf/01/13. https://www.minet.uni-jena.de//preprints/hertel_13/Regdreipfla.pdf
- Hertel, E., Richter, R. (2014). Tiling convex polygons with congruent equilateral triangles. Discrete Comput. Geom. 51: 753–759. DOI: 10.1007/s00454-014-9576-7.
- Kelleher, J. R., Mayer, J. C. (2018). Poster: Tiling congruent equilateral triangles to construct convex polygons. Kennesaw Mountain Undergraduate Research Conference.
- Mathematics Stack Exchange Post: Sum of Nonzero Squares Modulo p. https://math.stackexchange.com/questions/2410920/sum-of-nonzero-squares-modulo-p
- Niven, I., Zuckerman, H. S. (1966). An Introduction to the Theory of Numbers. New York: Wiley.
- On-Line Encyclopedia of Integer Sequences: A229757; A229461. https://oeis.org/A229757; https://oeis.org/A229461.
- Wikipedia Article: Quadratic Residues. https://en.wikipedia.org/wiki/Quadratic_residue.
- Wikipedia Article: Fermat’s theorem on sum of two squares. https://en.wikipedia.org/wiki/Fermat%27s_theorem_on_sums_of_two_squares.
- Wikipedia Article: Sum of two squares theorem. https://en.wikipedia.org/wiki/Sum_of_two_squares_theorem.
- Wikipedia Article: Brahmagupta-Fibonacci identity. https://en.wikipedia.org/wiki/Brahmagupta-Fibonacci_identity.
- Wikipedia Article: Pythagorean triple. https://en.wikipedia.org/wiki/Pythagorean_triple.
- Wikipedia Article: Dirichlet’s theorem on arithmetic progressions. https://en.wikipedia.org/wiki/Dirichlet%27s_theorem_on_arithmetic_progressions.