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Search: id:A000987
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| A000987 |
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Number of stochastic matrices of integers.
(Formerly M1793 N0707)
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+0
1
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| 0, 1, 1, 2, 7, 32, 184, 1268, 10186, 93356, 960646, 10959452, 137221954, 1870087808, 27548231008, 436081302248, 7380628161076, 132975267434552
(list; graph; listen)
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OFFSET
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0,4
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REFERENCES
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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).
H. Gupta, Enumeration of symmetric matrices, Duke Math. J., 35 (1968), 653-659.
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CROSSREFS
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Sequence in context: A097900 A000153 A006154 this_sequence A006957 A079265 A112006
Adjacent sequences: A000984 A000985 A000986 this_sequence A000988 A000989 A000990
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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