%I M3981 N1650 #19 Apr 01 2017 00:33:45
%S 5,35,2266,30564722,25624410747226866,
%T 78769066691994300606138801216143967,
%U 3829103480069980011752318836153049525544593512352968628868212239132475999
%N Number of switching networks with S(n) acting on the domain and GL(2,2) acting on the range.
%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_, Jan 25 2012