A201797
Number of zero-sum nX2 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
5, 85, 455, 3617, 28625, 235827, 1972115, 16703881, 142672901, 1226999941, 10610923603, 92180196507, 803840798219, 7032319990027, 61691173120353, 542479698511869, 4780243712781261, 42200307665852185, 373156481784589911
Offset: 1
Some solutions for n=5
..2.-1...-2..2...-2..2...-1..2...-2..1....1..2....2..2....0..0....0..0...-1.-2
..2.-1...-2..0....1..1...-1..2....2.-1...-2.-2...-2.-2....2..2....2.-1...-1.-2
..0..0...-2..0....0..0....1.-2....2.-1....2.-2....2..0....0..0....2.-1....2..0
..0..0....2..2...-1.-1....1.-2...-2.-2....2.-2....2..0....0.-1...-1.-1....2..0
..0.-2....1.-1....2.-2....2.-2....1..2....2.-1...-2.-2...-2.-1...-1..1....0..2
A201798
Number of zero-sum nX3 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
19, 455, 4057, 48335, 562961, 7099021, 90062519, 1168520339, 15269686011, 201396758073, 2670595602167, 35597100656221, 476317522683397, 6395415423401799, 86112911010980123, 1162374111689802707
Offset: 1
Some solutions for n=4
.-2.-2.-2....1.-1..1....1..1.-2....0..1..1...-1..0..0....1..1.-2....1.-2..2
..2..2..2....0.-1..2...-2.-2..2....2..2..2....1..1..1....1..1.-2...-2.-2..2
.-1.-1.-1....0.-1..2....2.-2..2...-2.-2.-2....0..1..1...-1..1..1....2..2..2
..2.-1..2...-2.-1..0....2.-2..0...-1.-1..0....0.-2.-2...-1.-1..1...-2.-2.-1
A201796
Number of zero-sum n X n -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
1, 85, 4057, 988589, 722587629
Offset: 1
Some solutions for n=3
..2..0..0....0..0..0....0..0.-2...-2..0.-1....2.-1.-1...-1..1..2....0.-2.-2
.-2.-2.-2....1..0..0....0..0..0....0..0.-1....1.-1.-1....1..1.-2....1..1..1
..2..1..1....1..0.-2....2..2.-2....2..2..0....1..0..0....2.-2.-2....0..1..0
A201799
Number of zero-sum nX4 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
85, 3617, 48335, 988589, 20960485, 472565771, 10857153407, 253641348337, 5979418257253, 142075597768273, 3395164032578079, 81529069984570623, 1965470518289395959
Offset: 1
Some solutions for n=3
..0.-1..1..0...-2..1..1..0...-2.-2.-1.-1...-1..1.-2..1...-1..2.-2.-2
..0.-1..1..1...-2..1..1..1....2..2..0..0....1..1.-2..1....2..2..0..0
..0.-1..1.-1...-2..1..0..0...-1..2..0..1....0..0.-2..2...-2..0..0..1
A201800
Number of zero-sum nX5 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
381, 28625, 562961, 20960485, 722587629, 27941324053, 1077779765471
Offset: 1
Some solutions for n=2
.-1.-2.-2..0..0....1..1.-2..1..1...-1..1..1..1..1...-2.-1.-1..2.-2
..2..2..1..1.-1....0..0.-2.-2..2...-2.-2..1..0..0...-1..1..1..2..1
A201801
Number of zero-sum nX6 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
1751, 235827, 7099021, 472565771, 27941324053
Offset: 1
Some solutions for n=2
.-1.-1..2..2.-1..2...-1..0.-1..2.-2..1...-2.-2.-2..0..0..2....0.-2..1..1..2..2
.-2.-2..2..2.-1.-2....2..0.-1..2.-2..0....2.-1.-1..1..1..2...-2.-2.-2..1..2.-1
A201802
Number of zero-sum nX7 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.
Original entry on oeis.org
8135, 1972115, 90062519, 10857153407, 1077779765471
Offset: 1
Some solutions for n=2
.-2.-2.-2..1..1..2..0...-2.-2..2..2.-1.-1.-1...-2.-2.-1.-1.-1..2..0
..1..1.-2.-2..1..2..1....1.-2..2..1..1..0..0....1..1..0..0..2..2.-1
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