References
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- L. H. Gallardo and O. Raharandrainy, Bell numbers modulo a prime number, traces and trinomials, Electron. J. Combin. 21 (2014), no. 4, Paper 4.49, 30 pp.
- D. Kurepa, On the left-factorial function !n, Math. Balkanica 1 (1971), 147-153.
- J.-P. Serre, A Course in Arithmetic, Grad. Texts in Math. 7, Springer, New York, 1973.
- V. Soup, A Computational Introduction to Number Theory and Algebra, Cambridge University Press, 2009.