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A001627
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Related to Latin rectangles.
(Formerly M2165 N0862)
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2
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1, 0, 2, 44, 1008, 34432, 1629280, 101401344, 8030787968, 788377273856, 93933191303424, 13350759115563520, 2231133728986759168, 433075048506207645696, 96617322164029448916992, 24549315871469898190266368, 7047652261245574026565877760
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OFFSET
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1,3
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REFERENCES
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S. M. Kerawala, The enumeration of the Latin rectangle of depth three by means of a difference equation, Bull. Calcutta Math. Soc., 33 (1941), 119-127.
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).
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LINKS
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Table of n, a(n) for n=1..17.
Index entries for sequences related to Latin squares and rectangles
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FORMULA
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a(1) = 1, a(n) = A000186(n) + A000186(n-1) + 3*(n-1)*A001626(n-1). - Sean A. Irvine, Sep 25 2015
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CROSSREFS
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Sequence in context: A285746 A203606 A009620 * A202747 A094397 A213067
Adjacent sequences: A001624 A001625 A001626 * A001628 A001629 A001630
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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More terms from Sean A. Irvine, Sep 25 2015
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STATUS
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approved
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