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 A015350 Gaussian binomial coefficient [ n,7 ] for q = -10. 2
 1, -9090909, 91827363728191, -917356280909173462809, 9174480257209191175298447191, -91743885133148835462057759420652809, 917439768771348869854580597622587770347191 (list; graph; refs; listen; history; text; internal format)
 OFFSET 7,2 REFERENCES 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. LINKS Vincenzo Librandi, Table of n, a(n) for n = 7..100 MATHEMATICA Table[QBinomial[n, 7, -10], {n, 7, 20}] (* Harvey P. Dale, Mar 22 2012 *) PROG (Sage) [gaussian_binomial(n, 7, -10) for n in range(7, 14)] # Zerinvary Lajos, May 27 2009 (Magma) r:=7; q:=-10; [&*[(1-q^(n-i+1))/(1-q^i): i in [1..r]]: n in [r..15]]; // Vincenzo Librandi, Nov 06 2016 CROSSREFS Sequence in context: A105012 A186139 A335581 * A233613 A172620 A172711 Adjacent sequences: A015347 A015348 A015349 * A015351 A015352 A015353 KEYWORD sign,easy AUTHOR Olivier Gérard, Dec 11 1999 STATUS approved

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Last modified August 12 19:26 EDT 2024. Contains 375113 sequences. (Running on oeis4.)