

A001625


Related to Latin rectangles.
(Formerly M1304 N0500)


1



2, 4, 60, 1276, 41888, 1916064, 116522048, 9069595840, 878460379392, 103547791177216, 14588580791234048, 2420219602973093376, 466877775127725240320, 103607067936116866084864, 26204424894484840874483712
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OFFSET

2,1


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=2..16.
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. [Annotated scanned copy]
Index entries for sequences related to Latin squares and rectangles


FORMULA

a(2) = 2, a(n) = A001626(n) + 2 * A001627(n1) + 2 * (n1) * A001624(n1).  Sean A. Irvine, Sep 25 2015


CROSSREFS

Sequence in context: A009513 A242737 A018348 * A216758 A018352 A121059
Adjacent sequences: A001622 A001623 A001624 * A001626 A001627 A001628


KEYWORD

nonn


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from Sean A. Irvine, Sep 25 2015


STATUS

approved



