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A186962
T(n,k)=1/729 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace
10
0, 141, 141, 831, 3783, 831, 19881, 112707, 112707, 19881, 201495, 3277141, 5903759, 3277141, 201495, 3281361, 97400287, 373049827, 373049827, 97400287, 3281361, 40300479, 2888274935, 22237406277, 47796308777, 22237406277, 2888274935
OFFSET
1,2
COMMENTS
Table starts
............0..............141................831................19881
..........141.............3783.............112707..............3277141
..........831...........112707............5903759............373049827
........19881..........3277141..........373049827..........47796308777
.......201495.........97400287........22237406277........6014794685157
......3281361.......2888274935......1352397401223......760608010557461
.....40300479......85776954369.....81727735220193....96133158385481199
....582004185....2546947279751...4949074316433529.12152638841787524045
...7640173839...75630536807503.299482222563196133
.105998979105.2245787022119429
LINKS
EXAMPLE
Some solutions for 5X4
..1..0..0..0....1..0..0..0....2..0..0..0....0..0..0..0....1..0..0..0
..1..0..0..0....1..0..0..0....2..0..0..0....1..0..0..0....0..0..0..0
..2..1..1..2....0..0..1..2....0..0..0..2....0..0..0..0....1..2..1..2
..1..0..1..1....0..1..1..1....2..0..0..2....0..1..2..2....0..0..0..2
..2..2..1..1....0..0..1..1....1..0..1..1....2..0..2..0....1..1..2..1
CROSSREFS
Sequence in context: A137506 A036192 A364805 * A235689 A045935 A144799
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 01 2011
STATUS
approved