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A002857 Number of Post functions of n variables.
(Formerly M3078 N1249)
+0
2
1, 3, 20, 996, 9333312, 6406603084568576, 16879085743296493582043922521915392, 717956902513121252476003434439730211917452457474409186632352788205535232 (list; graph; listen)
OFFSET

1,2

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).

Wheeler, Roger F.; Complete propositional connectives. Z. Math. Logik Grundlagen Math. 7 1961 185-198.

CROSSREFS

Sequence in context: A089943 A108699 A162134 this_sequence A024011 A052445 A089999

Adjacent sequences: A002854 A002855 A002856 this_sequence A002858 A002859 A002860

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 23 2000

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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