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The standard deviation of 1, 2, … , n – Pell's equation and rational triangles

  • E. Keith Lloyd (a1)



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1. Cyvin, S.J., Cyvin, B.N., Brunvoll, J., Lloyd, E.K., Circumscribing certain polygonal systems, Discrete Applied Math. 67, (1996) pp. 6778.
2. Sloane, N.J.A., Plouffe, S., Encyclopedia of integer sequences, Academic Press, San Diego, (1995).
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4. Hoskins, W.D., Table for third-degree spline interpolation using equi-spaced knots, Mathematics of Computation 25 (1971) pp. 797801.
5. Dudley, U., Elementary number theory, 2nd ed., Freeman, San Francisco CA, (1978).
6. Anderson, I., A First course in combinatorial mathematics, Clarendon Press, Oxford, (1974).
7. Dickson, L.E., History of the theory of numbers, 3 Vols, Carnegie Institute Publications 256, Washington DC, (1919–1923); reprinted: Chelsea, New York, (1952).
8. Hoppe, R., Rationales Dreieck, dessen Seiten auf einander folgende ganze Zahlen sind, Archiv Math. Phys. 64 (1879) pp. 441443.


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