login
A278607
Number of nX4 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.
1
1, 16224, 5985658, 1608427228, 371601597959, 70116431548595, 10962535851392548, 1484609498751465944, 180746700125333897094, 20196427927488082918343, 2086680362256607056736883
OFFSET
1,2
COMMENTS
Column 4 of A278610.
LINKS
EXAMPLE
Some solutions for n=2
..2..1..3..0. .3..1..2..1. .3..2..2..3. .3..3..1..3. .2..2..0..3
..1..3..0..1. .2..3..2..0. .1..3..0..3. .3..1..0..3. .2..1..0..0
CROSSREFS
Cf. A278610.
Sequence in context: A031843 A031624 A035921 * A235845 A254163 A254170
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 23 2016
STATUS
approved