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A000835 Number of switching networks (see Harrison reference for precise definition).
(Formerly M4375 N1840)
0
7, 22, 153, 15209, 29281010032, 131876417000509741750888020, 2760530168460193185695064401186144339478505237725915631330140 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Next term has 133 digits. - Sean A. Irvine, Jan 20 2012
Number of equivalence classes with AG_n(Z_2) operating on the domain and symmetric group of 2 variables operating on the range. - Sean A. Irvine, Jan 20 2012
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
CROSSREFS
Sequence in context: A027838 A194996 A330089 * A239028 A335638 A197991
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Sean A. Irvine, Jan 19 2012
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)