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 A000839 Number of n-input 3-output switching networks under action of complementing group on the inputs and outputs. (Formerly M4577 N1951) 1

%I M4577 N1951

%S 8,176,265728,2199038984192,309485009821617747608469504,

%T 12259964326927110866866776295192695943928870296113643520

%N Number of n-input 3-output switching networks under action of complementing group on the inputs and outputs.

%C a(n)=2^(3*(2^n-1)-n)+2^(2^n+2^(n-1))-2^(2^n+2^(n-1)-n). [Sean A. Irvine, Jul 14 2011].

%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>

%Y Cf. A000133, A000838.

%K easy,nonn

%O 1,1

%A _N. J. A. Sloane_.

%E More terms from _Vladeta Jovovic_, Feb 26 2000

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Last modified December 7 20:28 EST 2019. Contains 329849 sequences. (Running on oeis4.)