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A265004
Number of nX7 arrays of permutations of 7 copies of 0..n-1 with rows and columns nondecreasing.
0
1, 4, 54, 1720, 97341, 8360853, 1001060834, 155796077603, 30055866217955
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A265005.
LINKS
Table of n, a(n) for n=1..9.
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0..2....0..0..0..0..0..0..1....0..0..0..1..1..2..2
..0..1..1..1..1..2..2....0..1..1..2..2..2..2....0..0..1..1..1..2..2
..1..1..2..2..3..3..3....1..1..1..2..2..2..3....0..1..1..2..2..3..3
..1..2..2..3..3..3..3....1..3..3..3..3..3..3....0..2..3..3..3..3..3
CROSSREFS
Cf. A265005.
Sequence in context: A369569 A201731 A225823 * A284747 A003955 A182264
Adjacent sequences: A265001 A265002 A265003 * A265005 A265006 A265007
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2015
STATUS
approved

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Last modified November 7 09:19 EST 2024. Contains 377527 sequences.
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