Search: id:A004029
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%I A004029 M2103
%S A004029 1,2,17,219,4783,222018,28927922
%N A004029 Number of n-dimensional space groups.
%D A004029 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A004029 H. Brown, R. B\"{u}low, J. Neub\"{u}ser, H. Wondratschek and H. Zassenhaus, 
               Crystallographic Groups of Four-Dimensional Space. Wiley, NY, 1978, 
               p. 52.
%D A004029 P. Engel, ``Geometric crystallography,'' in P. M. Gruber and J. M. Wills, 
               editors, Handbook of Convex Geometry. North-Holland, Amsterdam, Vol. 
               B, pp. 989-1041.
%D A004029 J. E. Goodman and J. O'Rourke, editors, Handbook of Discrete and Computational 
               Geometry, CRC Press, 1997, p. 102 and 934.
%D A004029 T. Janssen, Crystallographic Groups. North-Holland, Amsterdam, 1973, 
               p. 119.
%D A004029 W. Plesken and T. Schulz, Counting crystallographic groups in low dimensions, 
               Experimental Mathematics, 9 (No. 3, 2000), 407-411.
%D A004029 R. L. E. Schwarzenberger, $N$-Dimensional Crystallography. Pitman, London, 
               1980, p. 34.
%H A004029 Dror Bar-Natan, <a href="http://www.math.toronto.edu/~drorbn/Gallery/
               Symmetry/Tilings/index.html">Illustrations of 2-dimensional symmetry 
               groups</a>
%H A004029 W. Plesken and T. Schulz, <a href="http://wwwb.math.rwth-aachen.de/carat/
               ">CARAT Homepage</a>
%H A004029 Experimental Mathematics, <a href="http://www.expmath.org/">Home Page</
               a>
%Y A004029 Cf. A006227, A004027.
%Y A004029 Sequence in context: A102023 A058010 A126752 this_sequence A144208 A058239 
               A006227
%Y A004029 Adjacent sequences: A004026 A004027 A004028 this_sequence A004030 A004031 
               A004032
%K A004029 nonn,hard,nice
%O A004029 0,2
%A A004029 N. J. A. Sloane (njas(AT)research.att.com).

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