A202973
Number of n X 2 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 2, 4, 7, 14, 31, 69, 155, 354, 814, 1875, 4326, 9993, 23095, 53387, 123430, 285394, 659913, 1525942, 3528541, 8159347, 18867623, 43629460, 100888804, 233295503, 539473228, 1247479743, 2884676711, 6670537293, 15424975984, 35668774074
Offset: 1
Some solutions for n=5:
..0..0....0..0....1..1....0..0....1..1....0..0....1..1....1..1....1..1....1..1
..0..0....1..1....1..1....1..1....1..1....0..0....1..1....1..1....1..1....1..1
..0..0....1..1....0..0....1..1....0..0....0..0....1..1....1..1....1..0....0..1
..1..1....0..0....1..1....1..1....0..0....0..0....0..0....1..1....1..1....1..1
..1..1....0..0....1..1....0..0....0..0....0..0....0..0....1..1....1..1....1..1
A202974
Number of n X 3 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 4, 17, 58, 215, 866, 3507, 14120, 56921, 229860, 928443, 3749720, 15144167, 61165438, 247041429, 997775144, 4029911351, 16276407572, 65738788527, 265512410122, 1072378133103, 4331228325504, 17493399301365, 70654095337584
Offset: 1
Some solutions for n=5:
1 1 1 0 1 1 1 1 1 0 1 1 0 0 0 1 1 1 1 1 0
1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 0 1 1 1 1
0 0 0 1 1 1 1 0 0 1 0 1 1 1 1 1 0 1 1 0 1
0 0 0 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1
0 0 0 0 0 0 1 1 1 0 1 1 0 1 1 1 1 1 0 0 0
A202975
Number of nX4 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 7, 58, 385, 2582, 17740, 122468, 846908, 5858575, 40519184, 280214415, 1937863565, 13401760093, 92683431379, 640976755990, 4432841883249, 30656469034888, 212012773252576, 1466229429328620, 10140090725898534
Offset: 1
Some solutions for n=5
..1..1..0..0....1..1..1..0....1..1..0..0....1..1..1..1....0..1..1..0
..1..1..1..1....1..0..1..1....1..1..1..1....1..0..1..1....1..1..1..1
..0..0..1..1....1..0..0..1....1..1..1..1....1..0..1..0....1..0..1..1
..0..1..1..1....1..0..1..1....1..1..1..1....1..1..1..1....1..1..0..1
..0..1..1..0....1..1..1..0....0..1..1..0....0..1..1..1....0..1..1..1
A202976
Number of nX5 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 14, 215, 2582, 31380, 379788, 4590696, 55723864, 676981428, 8220515870, 99804610105, 1211737645986, 14712070032443, 178624535138225, 2168744883228649, 26331490124843751, 319699729136522144
Offset: 1
Some solutions for n=5
..1..1..1..1..1....0..1..1..0..0....1..1..1..1..0....1..1..0..0..0
..1..0..1..1..1....0..1..1..1..1....1..1..0..1..1....1..1..0..1..1
..1..0..0..1..1....0..1..1..0..1....1..1..0..0..1....1..1..0..1..1
..1..1..1..1..0....0..1..0..1..1....0..0..1..1..1....1..0..1..1..1
..1..1..1..1..0....0..1..1..1..1....0..0..1..1..1....1..1..1..0..0
A202977
Number of nX6 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 31, 866, 17740, 379788, 8071997, 170937904, 3635245483, 77355342983, 1645059084851, 34980781489450, 743874666203318, 15818866015610506, 336395670890580933, 7153607521601342149, 152124673570902721461
Offset: 1
Some solutions for n=4
..1..1..1..1..0..0....0..1..1..1..1..0....0..0..1..1..1..1....0..1..1..1..1..0
..1..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..0..1....1..1..0..1..1..1
..0..1..1..1..1..1....1..1..1..0..1..1....1..1..1..1..1..1....1..1..0..1..1..1
..0..1..1..0..1..1....1..1..0..0..0..0....0..1..1..1..0..0....0..1..1..1..0..0
A202978
Number of n X 7 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 69, 3507, 122468, 4590696, 170937904, 6330398606, 235362503738, 8754859878268, 325475861455984, 12099539397621289, 449821095241853452, 16722911203146960563, 621702975576594657954, 23112884157721171287549
Offset: 1
Some solutions for n=3
..1..1..0..1..1..0..0....0..1..1..0..1..1..1....1..1..1..1..1..1..0
..1..1..0..1..1..1..1....1..1..1..0..1..1..1....1..1..1..0..1..1..1
..0..0..0..0..0..1..1....1..1..1..0..0..0..0....1..1..1..1..1..1..1
A202972
Number of n X n 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Original entry on oeis.org
1, 2, 17, 385, 31380, 8071997, 6330398606, 15305115754880, 113359928263133320, 2565928235760939767164, 177686302889022383527488349, 37653160193950657089306550224687, 24413727008012244865702150476410950284
Offset: 1
Some solutions for n=5
..0..0..1..1..0....1..1..1..1..1....0..1..1..1..0....1..1..1..0..0
..0..0..1..1..0....1..1..0..1..1....1..1..0..1..0....1..0..1..1..0
..1..1..1..0..0....1..1..0..1..0....1..1..1..1..1....1..1..1..1..1
..1..1..1..1..1....0..0..0..1..1....1..1..1..0..1....0..1..1..1..1
..1..1..0..1..1....0..0..0..1..1....0..0..1..1..1....0..1..1..0..0
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