Search: id:A000841
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%I A000841 M3675 N1498
%S A000841 4,40,3264,45826304,38436615422689280,
%T A000841 118153600037991449448840725115437056,
%U A000841 5743655220104970017628478254229574276569046648639726053254944342556016640
%N A000841 Number of n-input 2-output switching networks under action of symmetric 
               group S(n) on the inputs and complementing group C(2,2) on the outputs.
%D A000841 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000841 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000841 M. A. Harrison, On the number of classes of switching networks, J. Franklin 
               Instit., 276 (1963), 313-327.
%H A000841 <a href="Sindx_Sw.html#switching">Index entries for sequences related 
               to switching networks</a>
%Y A000841 Cf. A000612, A000842.
%Y A000841 Sequence in context: A102922 A139688 A072445 this_sequence A059918 A002677 
               A119527
%Y A000841 Adjacent sequences: A000838 A000839 A000840 this_sequence A000842 A000843 
               A000844
%K A000841 nonn
%O A000841 1,1
%A A000841 N. J. A. Sloane (njas(AT)research.att.com).
%E A000841 More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 26 2000

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