

A001627


Related to Latin rectangles.
(Formerly M2165 N0862)


2



1, 0, 2, 44, 1008, 34432, 1629280, 101401344, 8030787968, 788377273856, 93933191303424, 13350759115563520, 2231133728986759168, 433075048506207645696, 96617322164029448916992, 24549315871469898190266368, 7047652261245574026565877760
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OFFSET

1,3


REFERENCES

S. M. Kerawala, The enumeration of the Latin rectangle of depth three by means of a difference equation, Bull. Calcutta Math. Soc., 33 (1941), 119127.
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).


LINKS

Table of n, a(n) for n=1..17.
Index entries for sequences related to Latin squares and rectangles


FORMULA

a(1) = 1, a(n) = A000186(n) + A000186(n1) + 3*(n1)*A001626(n1).  Sean A. Irvine, Sep 25 2015


CROSSREFS

Sequence in context: A035605 A203606 A009620 * A202747 A094397 A213067
Adjacent sequences: A001624 A001625 A001626 * A001628 A001629 A001630


KEYWORD

nonn


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from Sean A. Irvine, Sep 25 2015


STATUS

approved



