A267902
Number of 2Xn arrays containing n copies of 0..2-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.
Original entry on oeis.org
0, 2, 3, 11, 29, 93, 268, 842, 2547, 7946, 24539, 76721, 239462, 751569, 2360679, 7437243, 23461543, 74155431, 234687456, 743792675, 2359972537, 7496293462, 23834595755, 75852059135, 241594260984, 770090455545, 2456436981617
Offset: 1
Some solutions for n=4
..0..1..0..1....0..0..1..1....0..1..1..1....0..0..1..0....0..0..0..1
..0..1..0..1....1..1..0..0....0..0..0..1....1..1..1..0....1..1..0..1
A267903
Number of 3Xn arrays containing n copies of 0..3-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.
Original entry on oeis.org
0, 6, 20, 268, 2324, 28318, 315196, 3786836, 45099306, 547824556, 6687936028, 82350672500, 1019550923830, 12691867518330, 158695413996448, 1992293553570646, 25099547132728742, 317210539882144928
Offset: 1
Some solutions for n=4
..0..2..1..1....0..0..2..2....0..0..1..1....0..2..2..1....0..0..1..1
..0..2..0..2....2..2..1..0....2..1..1..0....0..0..0..1....2..0..1..1
..1..1..0..2....1..1..1..0....2..2..2..0....1..1..2..2....2..0..2..2
A267899
Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.
Original entry on oeis.org
1, 3, 20, 138, 1488, 20400, 317520, 5911920, 126080640, 2999566080, 79604985600
Offset: 1
Some solutions for n=4
..0..0..1....0..0..0....0..0..0....0..0..1....0..1..1....0..0..3....0..2..2
..0..1..1....2..3..3....1..1..1....2..0..1....0..1..2....0..3..3....0..0..2
..2..2..3....2..3..1....2..2..2....2..2..1....0..2..2....1..1..1....3..1..1
..2..3..3....2..1..1....3..3..3....3..3..3....3..3..3....2..2..2....3..3..1
A267900
Number of nX4 arrays of permutations of 4 copies of 0..n-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.
Original entry on oeis.org
1, 11, 268, 17658, 1696920, 273460560, 59383337040
Offset: 1
Some solutions for n=4
..0..0..1..3....0..3..2..2....0..0..1..1....0..2..2..1....0..0..1..1
..2..2..1..3....0..3..0..0....2..2..3..0....0..1..1..1....0..0..3..3
..1..0..2..2....2..1..1..3....1..2..3..0....3..2..3..3....2..3..2..2
..1..0..3..3....2..1..1..3....1..2..3..3....3..2..0..0....2..3..1..1
A267904
Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.
Original entry on oeis.org
0, 30, 138, 17658, 414138, 28493946, 1246334388, 72638390592, 3823498828854, 218021286182580
Offset: 1
Some solutions for n=4
..0..2..2..2....0..0..3..2....0..0..3..3....0..0..3..3....0..0..0..0
..0..0..3..2....0..0..3..2....0..0..2..3....2..2..1..2....3..3..1..1
..1..0..3..1....1..1..1..2....1..1..2..3....3..3..1..2....3..2..1..1
..1..3..3..1....3..3..1..2....2..2..1..1....0..0..1..1....3..2..2..2
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