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A278731 Number of nX5 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake. 1
456, 121520, 28637916, 6410559865, 1351385130108, 268284486351027, 50067074390669892, 8732216738504713198, 1415177080112634284232, 212485358907612452321760, 29562031801069787043980684 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A278734.
LINKS
EXAMPLE
Some solutions for n=2
..1..3..3..2..1. .1..3..2..2..0. .3..1..2..1..0. .3..2..1..0..0
..3..2..2..3..1. .2..1..1..0..2. .3..2..0..1..0. .0..1..2..1..1
CROSSREFS
Cf. A278734.
Sequence in context: A048110 A282101 A037945 * A282047 A278433 A278551
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2016
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)