login
A207279
Number of nX4 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal
1
214, 45796, 4686270, 553738958, 65396633910, 7655462652196, 895547972671398, 104837508468573926, 12276503049659515050, 1437524784977879770604, 168318455922909141130486, 19708184921537975123608340
OFFSET
1,1
COMMENTS
Column 4 of A207283
LINKS
EXAMPLE
Some solutions for n=4
..2..0..2..0....3..0..1..1....2..1..0..0....3..3..0..1....3..0..0..1
..1..0..3..2....0..3..2..0....3..0..0..1....3..2..1..1....3..2..2..0
..3..1..3..1....1..2..0..0....1..2..3..3....2..1..1..0....2..2..1..3
..1..3..2..0....1..0..0..1....3..2..0..0....2..0..3..0....0..1..1..3
CROSSREFS
Sequence in context: A184600 A278093 A259015 * A207475 A207531 A200901
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 16 2012
STATUS
approved