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%I M4714 N2015 #19 Feb 01 2022 01:18:49
%S 10,55,1996,11756666,4805323147589984,
%T 7384600028168436080716029918923776,
%U 179489225628280313255222684940441967551973345417569571214806075240914944
%N Number of switching networks (see Harrison reference for precise definition).
%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_, Jul 05 2011