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A268016 Number of nX4 0..2 arrays with every repeated value in every row and column greater than or equal to the previous repeated value. 1
78, 6084, 474552, 31831908, 2012075697, 119453097281, 6761580343329, 367501986337710, 19300005472710895, 983989084426524929, 48888960624425750151, 2374418848334124952354, 113014440791056538695922 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A268019.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..2..1..0..0....2..1..2..1....0..2..2..2....2..1..1..1....0..2..1..1

..2..1..0..2....0..1..0..2....1..0..2..1....2..0..2..2....2..0..1..1

CROSSREFS

Cf. A268019.

Sequence in context: A093278 A328354 A268023 * A077694 A119216 A119236

Adjacent sequences: A268013 A268014 A268015 * A268017 A268018 A268019

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 24 2016

STATUS

approved

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Last modified February 7 08:55 EST 2023. Contains 360115 sequences. (Running on oeis4.)