A205415 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order.

468, 3868, 3868, 33322, 44596, 33322, 236576, 549414, 549414, 236576, 1820215, 5686031, 10331386, 5686031, 1820215, 14452683, 64878898, 151598017, 151598017, 64878898, 14452683, 109757792, 768581101, 2553087985, 2839359056, 2553087985

Offset: 1

Author

R. H. Hardin Jan 26 2012

Keywords

• nonn
• tabl

Comments

Table starts

.......468........3868..........33322.........236576........1820215

......3868.......44596.........549414........5686031.......64878898

.....33322......549414.......10331386......151598017.....2553087985

....236576.....5686031......151598017.....2839359056....67792717447

...1820215....64878898.....2553087985....67792717447..2520131261396

..14452683...768581101....45661264026..1715387177450.98445276297551

.109757792..8606465750...735422130329.36803297869771

.844627201.98080551694.12286397087182

Examples

			Some solutions for n=3 k=3
..0..0..0..1..2....0..0..0..1..0....0..1..1..0..1....0..1..0..2..1
..2..0..0..1..2....0..0..2..1..0....1..1..1..1..1....2..2..2..2..2
..1..0..1..1..1....2..0..2..1..0....2..2..1..0..0....0..0..0..2..2
..0..0..0..0..0....1..0..2..2..2....0..0..0..0..0....2..0..2..2..1
..2..0..1..1..0....1..0..2..1..0....1..1..1..0..1....1..0..2..2..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..60