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%I M4905 N2103 #20 Feb 12 2015 08:18:53
%S 13,87,4148,153668757,41269612629126375351,
%T 810896098877923596128062174904361421866219158
%N Number of switching networks (see Harrison reference for precise definition).
%C Next term has 99 digits. - _Sean A. Irvine_, Jan 20 2012
%C Number of equivalence classes with AG_n(Z_2) operating on the domain and symmetric group of 3 variables operating on the range. - _Sean A. Irvine_, Jan 20 2012
%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 19 2012