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A185614
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum
5
0, 171, 171, 361, 2121, 361, 3645, 24993, 24993, 3645, 13365, 313105, 554305, 313105, 13365, 94905, 3959747, 16830089, 16830089, 3959747, 94905, 424845, 50512903, 455401149, 1099131565, 455401149, 50512903, 424845, 2682129, 646053371
OFFSET
1,2
COMMENTS
Table starts
.......0.......171.........361........3645.......13365.........94905
.....171......2121.......24993......313105.....3959747......50512903
.....361.....24993......554305....16830089...455401149...13132512119
....3645....313105....16830089..1099131565.68751907871.4433660417573
...13365...3959747...455401149.68751907871
...94905..50512903.13132512119
..424845.646053371
.2682129
LINKS
EXAMPLE
Some solutions for 4X3
..0..1..1....1..2..1....0..0..2....1..1..2....0..2..1....2..0..2....2..2..2
..2..1..1....0..1..0....2..0..0....2..2..1....0..0..2....2..2..2....0..2..0
..0..0..1....1..0..1....0..0..0....1..1..2....0..2..1....0..0..0....1..0..1
..2..2..1....2..1..2....2..0..0....2..1..1....0..0..2....2..2..2....2..2..2
CROSSREFS
Sequence in context: A015975 A292090 A186871 * A187140 A185845 A045149
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 31 2011
STATUS
approved