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REFERENCES
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J. Goldman and G.-C. Rota, The number of subspaces of a vector space, pp. 75-83 of W. T. Tutte, editor, Recent Progress in Combinatorics. Academic Press, NY, 1969.
I. P. Goulden and D. M. Jackson, Combinatorial Enumeration. Wiley, NY, 1983, p, 99.
M. Sved, Gaussians and binomials, Ars. Combinatoria, 17A (1984), 325-351.
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PROGRAM
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(Other) sage: [gaussian_binomial(n, 4, -13) for n in xrange(4, 12)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 27 2009]
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