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A222004 Number of n X 6 arrays with each row a permutation of 1..6 having at least as many downsteps as the preceding row, with rows in lexicographically nonincreasing order 1
720, 138715, 15637284, 1252017597, 77961426700, 3982479033010, 172906859984380, 6543173556319109, 219895864612975276, 6658221038381059161, 183720358904970752868, 4662354960197094985853, 109643129437736738271166 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A222005.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..203

EXAMPLE

Some solutions for n=3

..4..1..2..3..5..6....1..4..6..2..5..3....4..1..2..5..6..3....1..3..5..6..2..4

..1..3..5..4..6..2....1..3..6..4..2..5....1..6..3..5..2..4....1..3..2..5..4..6

..1..2..6..3..5..4....1..2..5..4..3..6....1..2..5..4..3..6....1..2..4..3..6..5

CROSSREFS

Cf. A222005.

Sequence in context: A246217 A003931 A158049 * A047803 A166765 A008411

Adjacent sequences:  A222001 A222002 A222003 * A222005 A222006 A222007

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 03 2013

STATUS

approved

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Last modified May 18 19:58 EDT 2021. Contains 344002 sequences. (Running on oeis4.)