Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I M1720 N0682 #21 Apr 01 2017 00:37:35
%S 2,6,70,700229,184239362390740969,
%T 3620071869990730348276861702715495626355546,
%U 1397856755476623081643981198354119089406016417825924278115794483751825503676804770385912700712220
%N Number of switching networks with AG(n,2) acting on the domain and AG(3,2) 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>
%H M. A. Harrison, <a href="http://hdl.handle.net/2027.42/5406"> On the number of classes of (n,k) switching networks</a>, University of Michigan (1962).
%K nonn
%O 1,1
%A _N. J. A. Sloane_
%E More terms from _Sean A. Irvine_, Jan 26 2012