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A185845 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace 10
0, 171, 171, 405, 1773, 405, 3249, 20097, 20097, 3249, 12609, 222003, 424197, 222003, 12609, 72225, 2506851, 10670517, 10670517, 2506851, 72225, 332937, 28276065, 254648349, 560733777, 254648349, 28276065, 332937, 1731321, 319126401 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
........0..........171..............405...............3249...............12609
......171.........1773............20097.............222003.............2506851
......405........20097...........424197...........10670517...........254648349
.....3249.......222003.........10670517..........560733777.........29306445165
....12609......2506851........254648349........29306445165.......3293066139075
....72225.....28276065.......6182861913......1532963751183.....373447226493477
...332937....319126401.....149296412943.....80217651167325...42234121752791535
..1731321...3601102725....3610924080057...4197053176231149.4780252449901079883
..8410473..40637462859...87290961055317.219601118427318765
.42400017.458593005339.2110537794502179
LINKS
EXAMPLE
Some solutions for 4X3
..1..1..2....0..0..2....1..0..0....0..0..1....2..0..1....2..2..2....0..2..0
..1..2..2....1..2..2....0..0..2....1..1..2....0..0..2....2..2..2....1..2..2
..1..1..1....0..1..0....1..1..2....0..0..1....0..0..2....0..1..1....0..1..2
..1..1..1....1..2..1....1..0..0....2..2..2....0..0..2....0..1..0....2..2..1
CROSSREFS
Sequence in context: A186871 A185614 A187140 * A045149 A031511 A101273
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 05 2011
STATUS
approved

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Last modified May 26 03:14 EDT 2024. Contains 372807 sequences. (Running on oeis4.)