Search: id:A006115
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%I A006115 M4211
%S A006115 1,1,6,31,806,20306,2558556,320327931,200525284806,125368356709806,
%T A006115 391901483074853556,1224770494838892134806,19138263752352528498478556
%N A006115 Gaussian binomial coefficient [ n,n/2 ] for q=5.
%D A006115 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006115 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.
%D A006115 I. P. Goulden and D. M. Jackson, Combinatorial Enumeration. Wiley, NY, 
               1983, p, 99.
%D A006115 M. Sved, Gaussians and binomials, Ars. Combinatoria, 17A (1984), 325-351.
%Y A006115 Sequence in context: A144576 A120107 A015462 this_sequence A144780 A126976 
               A045159
%Y A006115 Adjacent sequences: A006112 A006113 A006114 this_sequence A006116 A006117 
               A006118
%K A006115 nonn
%O A006115 0,3
%A A006115 N. J. A. Sloane (njas(AT)research.att.com).

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