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A265476 Number of nX4 0..n+4-2 arrays with upper left zero and lower right n+4-2 and each element differing from its diagonal and antidiagonal neighbors by one or two. 1
16, 366, 32400, 1211112, 128323584, 3120703104, 589329511684, 6424959359808, 3010884585054784, 30416313423877920, 16127828989578410896, 78450302166015801792, 89417580553113361553664, 268486460625576403793312 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A265480.
LINKS
EXAMPLE
Some solutions for n=3
..0..5..4..2....0..3..3..3....0..2..3..4....0..4..4..5....0..3..3..3
..4..2..3..2....5..2..4..5....3..2..3..4....3..2..3..2....5..2..4..2
..4..2..1..5....3..3..4..5....4..4..3..5....1..5..0..5....4..3..4..5
CROSSREFS
Cf. A265480.
Sequence in context: A025759 A276257 A276097 * A008427 A187177 A053105
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2015
STATUS
approved

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Last modified July 19 05:20 EDT 2024. Contains 374388 sequences. (Running on oeis4.)