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A000857 Number of switching networks (see Harrison reference for precise definition).
(Formerly M3696 N1511)
+0
1
4, 74, 63440, 244728561176 (list; graph; listen)
OFFSET

1,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

F. Yano and H. Yoshida, Some set partition statistics in non-crossing partitions and generating functions, Discr. Math., 307 (2007), 3147-3160.

M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327.

LINKS

Index entries for sequences related to switching networks

CROSSREFS

Sequence in context: A139112 A100865 A007157 this_sequence A046057 A072373 A006412

Adjacent sequences: A000854 A000855 A000856 this_sequence A000858 A000859 A000860

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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