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%I M3656 N1488 #19 Apr 01 2017 00:31:23
%S 4,34,8900,15320103918,429840804866758538021686,
%T 2837954705307504063799234409931200916180905873402528
%N Number of n-input 3-output switching networks under action of S(n) and complementing group C(2,3) on inputs and outputs.
%D M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H <a href="/index/Sw#switching">Index entries for sequences related to switching networks</a>
%K nonn
%O 1,1
%A _N. J. A. Sloane_
%E More terms from _Sean A. Irvine_, Aug 10 2011
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