A185565
1/4 the number of nX7 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
4096, 45562500, 504547256880, 5586628402633500, 61858104930689319360, 684925618712729136913980, 7583858300260627032845531520, 83972485690826213759616527499540, 929787724653148422947168982361958940
Offset: 1
Some solutions for 3X7 with a(1,1)=0
..0..0..0..0..0..0..1....0..0..0..0..1..1..2....0..0..0..0..2..0..2
..0..2..0..2..2..1..3....0..2..0..2..0..0..2....0..2..0..2..1..0..2
..0..0..2..0..0..1..3....0..0..2..0..1..0..3....0..0..2..0..1..3..0
A185560
1/4 the number of n X n 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
1, 60, 50580, 598507920, 99407416968000, 231753101877188629380, 7583858300260627032845531520, 3483475434832751291309593655505225600, 22459143127863154464679826472043109609252549520
Offset: 1
Some solutions for 3X3 with a(1,1)=0
..0..1..2....0..3..2....0..0..0....0..3..2....0..2..1....0..0..0....0..0..3
..3..1..1....1..2..0....1..2..2....0..0..0....1..3..0....0..2..0....3..3..0
..3..3..1....1..2..0....3..3..3....1..1..3....0..1..3....0..0..2....0..0..1
A185561
1/4 the number of n X 3 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
16, 900, 50580, 2842560, 159749820, 8977824540, 504547256880, 28355191537860, 1593541291098420, 89555869973406240, 5032975230384726780, 282849573983126145660, 15895941831670877597520, 893340453575999346503940
Offset: 1
Some solutions for 5 X 3 with a(1,1)=0:
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..2..2....0..2..0....0..2..0....0..2..2....0..2..0....0..2..0....0..2..0
..2..0..1....0..1..3....0..2..1....0..3..2....0..1..0....0..3..2....0..2..3
..0..1..3....2..2..2....1..2..2....3..0..3....3..2..3....0..3..3....0..2..3
..3..3..0....1..2..0....3..3..3....0..3..1....0..1..0....3..1..0....1..1..3
A185562
1/4 the number of n X 4 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
64, 13500, 2842560, 598507920, 126017211780, 26533211918040, 5586628402633500, 1176277376648694960, 247667889663690066720, 52147040135402715629580, 10979678466093753927519840, 2311796391622216326875508300
Offset: 1
Some solutions for 3 X 4 with a(1,1)=0:
..0..0..2..0....0..0..3..0....0..2..0..2....0..0..3..1....0..2..2..0
..0..2..0..3....2..0..3..2....0..2..0..2....2..2..2..2....0..2..0..2
..0..3..3..2....2..2..1..2....2..3..2..1....0..3..0..0....0..2..3..2
A185563
1/4 the number of n X 5 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
256, 202500, 159749820, 126017211780, 99407416968000, 78416544382742160, 61858104930689319360, 48796145962555619907720, 38492350573406180494467240, 30364304873646611423433030660, 23952577505016018447231455650500
Offset: 1
Some solutions for 3 X 5 with a(1,1)=0.
..0..0..0..2..3....0..0..0..3..0....0..0..2..2..1....0..0..0..0..2
..0..2..2..0..0....0..2..0..0..1....0..2..0..1..2....0..2..2..0..1
..0..0..3..2..0....0..0..1..3..1....0..0..2..1..2....0..2..3..3..1
A185564
1/4 the number of nX6 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
1024, 3037500, 8977824540, 26533211918040, 78416544382742160, 231753101877188629380, 684925618712729136913980, 2024236566241727245692157080, 5982450596328307878990974438640
Offset: 1
Some solutions for 3X6 with a(1,1)=0
..0..0..0..2..2..2....0..0..0..2..0..0....0..0..0..0..0..3....0..0..0..2..2..3
..0..2..2..0..1..0....0..2..0..2..2..1....0..2..2..2..0..2....0..2..0..2..0..3
..0..0..2..2..2..2....0..0..2..3..0..0....0..0..0..2..3..2....0..0..2..3..1..3
A185566
1/4 the number of nX8 0..3 arrays with no element equal both to the element above and to the element to its left.
Original entry on oeis.org
16384, 683437500, 28355191537860, 1176277376648694960, 48796145962555619907720, 2024236566241727245692157080, 83972485690826213759616527499540, 3483475434832751291309593655505225600
Offset: 1
Some solutions for 3X8 with a(1,1)=0
..0..0..0..0..0..0..1..3....0..0..0..0..0..0..1..1....0..0..0..0..0..2..2..1
..0..2..0..2..2..0..0..1....0..2..0..2..2..2..3..1....0..2..0..2..2..0..2..3
..0..0..2..0..0..2..0..3....0..0..2..0..0..2..2..1....0..0..2..0..2..0..0..1
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