Search: id:A053172
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%I A053172
%S A053172 308,1916,9572,20732,43148,73052,155156,219716,331892,440036
%N A053172 Number of 3 X 3 integer matrices with elements in the range [ -n,n ] 
               which represent a three-fold rotation.
%Y A053172 A053170 = 2 * (1 + A053171 + this sequence + A053173 + A053174).
%Y A053172 Sequence in context: A142572 A118284 A118843 this_sequence A091552 A159004 
               A031782
%Y A053172 Adjacent sequences: A053169 A053170 A053171 this_sequence A053173 A053174 
               A053175
%K A053172 nonn
%O A053172 1,1
%A A053172 Ralf W. Grosse-Kunstleve (rwgk(AT)cci.lbl.gov), Mar 26 2000

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