A186019 T(n,k)=1/8192 the number of (n+2)X(k+2) 0..3 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace

32, 1758, 1758, 96924, 301296, 96924, 5341590, 52270814, 52270814, 5341590, 294396948, 9070779376, 28935691550, 9070779376, 294396948, 16225291062, 1574001377834, 16043983212792, 16043983212792, 1574001377834, 16225291062

Offset

1,1

Comments

Table starts

........32..........1758............96924..............5341590

......1758........301296.........52270814...........9070779376

.....96924......52270814......28935691550.......16043983212792

...5341590....9070779376...16043983212792....28418702031939836

.294396948.1574001377834.8896022678225044.50262815203472669902

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

Some solutions for 5X4
..2..0..0..0....2..0..0..0....2..0..0..0....0..0..0..0....2..0..0..0
..0..0..0..0....2..0..0..0....2..0..0..0....2..0..0..0....2..0..0..0
..0..0..2..0....2..2..0..0....3..0..0..0....2..2..2..0....2..0..0..0
..0..1..0..2....2..3..2..2....2..1..2..2....0..0..2..0....0..3..2..2
..2..2..1..0....0..0..2..0....1..3..3..3....1..0..3..0....1..3..3..3

Crossrefs

Sequence in context: A264187 A223054 A183242 * A186011 A281733 A281835

Adjacent sequences: A186016 A186017 A186018 * A186020 A186021 A186022

Keyword

nonn,tabl

Author

R. H. Hardin Feb 10 2011

Status

approved