OFFSET
1,1
COMMENTS
Column 3 of A221438.
REFERENCES
RJ Stones, S Lin, X Liu, G Wang, On Computing the Number of Latin Rectangles, Graphs and Combinatorics, Graphs and Combinatorics (2016) 32:1187-1202; DOI 10.1007/s00373-015-1643-1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..58
EXAMPLE
Some solutions for n=3
..3..2..1....1..2..3....1..2..3....3..1..2....1..3..2....2..1..3....2..3..1
..2..1..3....2..3..1....3..1..2....2..3..1....3..2..1....3..2..1....1..2..3
..1..3..2....3..1..2....2..3..1....1..2..3....2..1..3....1..3..2....3..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 16 2013
STATUS
approved