(Sharpe 1987). For integers , ..., ,
is divisible by
(Chapman 1996), the first few values of which are the superfactorials 1, 1, 2, 12, 288, 34560, 24883200, 125411328000,
... (Sloane's A000178).
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1962.
Gradshteyn, I. S. and Ryzhik, I. M. Tables of Integrals, Series, and Products, 6th ed. San
Diego, CA: Academic Press, p. 1111, 2000.
Graham, R. L.; Knuth, D. E.; and Patashnik, O. "Binomial Coefficients." Ch. 5 in Concrete Mathematics: A Foundation for Computer Science, 2nd ed.
Reading, MA: Addison-Wesley, p. 231, 1994.
Radoux, C. "Query 145." Not. Amer. Math. Soc. 25, 197, 1978.
Ryser, H. J. Combinatorial Mathematics. Buffalo, NY: Math. Assoc. Amer.,
p. 53, 1963.
Sharpe, D. §2.9 in Rings and Factorization. Cambridge, England: Cambridge
University Press, 1987.
Sloane, N. J. A. Sequence A000178/M2049 in "The On-Line Encyclopedia of Integer
Sequences."
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