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A001376 Relational systems on n nodes.
(Formerly M3726 N1523)
0
4, 32896, 3002399885885440, 14178431955039103827204744901417762816 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

W. Oberschelp, ``Strukturzahlen in endlichen Relationssystemen,'' in Contributions to Mathematical Logic (Proceedings 1966 Hanover Colloquium), pp. 199-213, North-Holland Publ., Amsterdam, 1968.

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).

CROSSREFS

Sequence in context: A089210 A203037 A034014 * A053937 A173138 A132638

Adjacent sequences:  A001373 A001374 A001375 * A001377 A001378 A001379

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 16:39 EST 2012. Contains 205823 sequences.