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A265587
Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.
1
2, 1354, 927797, 505822314, 807767184602, 938564405271330, 1227457797882040471, 1414459627698083569657, 2816459153372415311863893, 4797378178335553600403126383, 9197263173294758529913861224297
OFFSET
1,1
COMMENTS
Column 4 of A265590.
LINKS
EXAMPLE
Some solutions for n=2
..0..4..0..1....0..4..3..7....0..1..2..3....0..4..6..2....0..4..6..2
..6..4..3..7....6..4..3..7....5..3..5..7....3..2..3..7....0..2..6..7
CROSSREFS
Cf. A265590.
Sequence in context: A020526 A247821 A202866 * A244614 A094477 A350806
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2015
STATUS
approved