A000878 Number of switching networks with GL(n,2) acting on the domain and GL(2,2) acting on the range. (Formerly M3948 N1627)

5, 27, 1204, 85617952, 47163951612740818544, 1853476797422393518997156640106964554652232210, 1431405317608062035603436602561550164804819376613495652537557566563513965206452741153347013992258358

Offset

1,1

References

M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327. (Available on-line at http://deepblue.lib.umich.edu/handle/2027.42/5406/.)

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..7.

Index entries for sequences related to switching networks

Crossrefs

Sequence in context: A119941 A216341 A063860 * A052470 A351749 A016087

Adjacent sequences: A000875 A000876 A000877 * A000879 A000880 A000881

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Sean A. Irvine, Jan 25 2012

Status

approved