A000860 Number of n-input 3-output switching networks under action of S(n) and complementing group C(2,3) on inputs and outputs. (Formerly M3656 N1488)

4, 34, 8900, 15320103918, 429840804866758538021686, 2837954705307504063799234409931200916180905873402528

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).

Links

Table of n, a(n) for n=1..6.

Index entries for sequences related to switching networks

Crossrefs

Sequence in context: A353041 A113231 A055621 * A222397 A334257 A193994

Adjacent sequences: A000857 A000858 A000859 * A000861 A000862 A000863

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Sean A. Irvine, Aug 10 2011

Status

approved