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URL: https://oeis.org/A000847

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A000847
Number of n-input 2-output switching networks under action of GL(n,2) on the inputs and complementing group C(2,2) on the outputs.
6
4, 20, 264, 80104, 464655217384, 4220043418839499735652372200, 176673930781452287254786178869471177643231519559311590043612856
OFFSET
1,1
REFERENCES
M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
CROSSREFS
Cf. A000848.
Sequence in context: A034235 A352412 A222655 * A188810 A120443 A053400
KEYWORD
nonn
EXTENSIONS
More terms from Vladeta Jovovic, Feb 26 2000
STATUS
approved