A000887 Number of switching networks with S(n,2) acting on the domain and AG(3,2) acting on the range where S(n,k) is the symmetric group acting on k variables. (Formerly M2054 N0813)

2, 12, 2828, 8747130342, 491246345257275414284942, 6486753612131092188914472969769826152814897906580334

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

M. A. Harrison, On the number of classes of (n,k) switching networks, University of Michigan (1962).

Crossrefs

Sequence in context: A356722 A357765 A003042 * A118542 A381244 A007155

Adjacent sequences: A000884 A000885 A000886 * A000888 A000889 A000890

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Sean A. Irvine, Jan 26 2012

Name corrected by Sean A. Irvine, Feb 01 2025

Status

approved