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A237332 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 8
81, 320, 320, 1264, 1660, 1264, 5120, 8588, 8588, 5120, 20692, 45996, 58296, 45996, 20692, 82800, 242644, 414268, 414268, 242644, 82800, 332192, 1279474, 2870224, 3988852, 2870224, 1279474, 332192, 1346016, 6740992, 19874388, 36921568 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.......81........320........1264..........5120...........20692...........82800
......320.......1660........8588.........45996..........242644.........1279474
.....1264.......8588.......58296........414268.........2870224........19874388
.....5120......45996......414268.......3988852........36921568.......342809906
....20692.....242644.....2870224......36921568.......449909120......5467718444
....82800....1279474....19874388.....342809906......5467718444.....88161950500
...332192....6740992...137663582....3194951224.....67160833084...1426506722524
..1346016...36117846...978134492...31126440590....873971263352..24924114752042
..5439936..190631336..6780688008..290583883424..10725570823166.399514227564720
.21769152.1005363146.46959680920.2718308070358.130884937973764
LINKS
FORMULA
Empirical for column k:
k=1: a(n) = 288*a(n-4) -6720*a(n-8) +33536*a(n-12) for n>15
k=2: [order 32] for n>34
EXAMPLE
Some solutions for n=3 k=4
..0..1..0..2..2....0..2..1..0..2....0..0..1..2..2....0..1..0..1..1
..0..1..1..1..2....2..1..2..0..2....2..1..2..2..2....1..0..2..1..0
..0..2..2..1..0....1..0..0..2..1....1..0..2..2..1....0..0..0..0..1
..2..0..1..2..2....0..2..2..1..2....2..2..2..1..0....1..1..2..0..0
CROSSREFS
Sequence in context: A237550 A237567 A237560 * A237325 A158776 A101963
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 06 2014
STATUS
approved

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Last modified July 19 04:51 EDT 2024. Contains 374388 sequences. (Running on oeis4.)