login
A185609
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant
5
0, 580, 580, 2366, 11354, 2366, 22236, 172026, 172026, 22236, 118616, 3017724, 4473352, 3017724, 118616, 891506, 50646550, 173403770, 173403770, 50646550, 891506, 5489048, 873299900, 5539941616, 15211806726, 5539941616, 873299900
OFFSET
1,2
COMMENTS
Table starts
........0.........580.........2366.........22236........118616.......891506
......580.......11354.......172026.......3017724......50646550....873299900
.....2366......172026......4473352.....173403770....5539941616.195867482580
....22236.....3017724....173403770...15211806726.1112996493332
...118616....50646550...5539941616.1112996493332
...891506...873299900.195867482580
..5489048.14968118872
.38326452
LINKS
EXAMPLE
Some solutions for 4X3
..1..0..0....1..0..1....2..0..0....0..2..1....1..0..3....3..0..0....0..0..0
..0..0..2....0..0..0....3..0..3....0..0..0....0..0..1....1..0..3....1..0..2
..2..0..3....0..0..0....0..0..0....0..0..0....1..0..1....1..0..2....0..0..0
..2..0..2....0..3..2....1..0..3....1..0..3....0..0..0....2..0..3....1..2..1
CROSSREFS
Sequence in context: A252985 A097769 A186786 * A127694 A185605 A186784
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 31 2011
STATUS
approved