Search: id:A003191
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%I A003191 M4318
%S A003191 1,1,6,5972,1225533120
%N A003191 Number of symmetric Latin squares of order 2n with constant diagonal.
%D A003191 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A003191 N. T. Gridgeman, Latin squares under restriction and a jumboization, 
               J. Rec. Math., 5 (No. 3, 1972), 198-202.
%H A003191 <a href="Sindx_La.html#Latin">Index entries for sequences related to 
               Latin squares and rectangles</a>
%Y A003191 Sequence in context: A116135 A011788 A111152 this_sequence A000438 A061109 
               A013784
%Y A003191 Adjacent sequences: A003188 A003189 A003190 this_sequence A003192 A003193 
               A003194
%K A003191 nonn,hard,nice
%O A003191 1,3
%A A003191 N. J. A. Sloane (njas(AT)research.att.com).
%E A003191 Daniele Degiorgi (degiorgi(AT)inf.ethz.ch) suggests that this is an erroneous 
               version of A000438.

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