A205264 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..1 introduced in row major order

240, 1814, 1814, 13728, 26185, 13728, 103876, 379283, 379283, 103876, 785920, 5487807, 10529929, 5487807, 785920, 5946280, 79391891, 291785631, 291785631, 79391891, 5946280, 44989988, 1148637735, 8084022743, 15472955417, 8084022743

Offset

1,1

Comments

Table starts

.......240.........1814...........13728.............103876...............785920

......1814........26185..........379283............5487807.............79391891

.....13728.......379283........10529929..........291785631...........8084022743

....103876......5487807.......291785631........15472955417.........820342090696

....785920.....79391891......8084022743.......820342090696.......83226275730613

...5946280...1148637735....224000986714.....43501020707845.....8445646803772751

..44989988..16618559061...6206887994602...2306771728514169...857047765548288466

.340397184.240437007466.171986199003963.122321759466209533.86969981709764397873

Links

R. H. Hardin, Table of n, a(n) for n = 1..143

Example

Some solutions for n=3 k=3
..0..1..1..1..1....0..1..1..0..1....0..1..1..1..1....0..0..1..0..1
..1..1..1..1..1....1..0..1..0..0....0..1..0..1..0....0..1..1..0..1
..1..0..1..0..1....1..0..1..1..1....0..0..0..0..1....0..0..0..0..0
..1..1..1..0..1....0..0..1..0..0....0..0..0..1..0....1..0..0..1..0
..0..1..0..0..0....0..0..1..0..1....0..0..1..0..1....1..1..1..0..0

Crossrefs

Sequence in context: A268796 A290655 A212781 * A205257 A049335 A004009

Adjacent sequences: A205261 A205262 A205263 * A205265 A205266 A205267

Keyword

nonn,tabl

Author

R. H. Hardin Jan 24 2012

Status

approved