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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

%I #4 Feb 06 2014 06:33:49

%S 81,320,320,1264,1660,1264,5120,8588,8588,5120,20692,45996,58296,

%T 45996,20692,82800,242644,414268,414268,242644,82800,332192,1279474,

%U 2870224,3988852,2870224,1279474,332192,1346016,6740992,19874388,36921568

%N 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

%C Table starts

%C .......81........320........1264..........5120...........20692...........82800

%C ......320.......1660........8588.........45996..........242644.........1279474

%C .....1264.......8588.......58296........414268.........2870224........19874388

%C .....5120......45996......414268.......3988852........36921568.......342809906

%C ....20692.....242644.....2870224......36921568.......449909120......5467718444

%C ....82800....1279474....19874388.....342809906......5467718444.....88161950500

%C ...332192....6740992...137663582....3194951224.....67160833084...1426506722524

%C ..1346016...36117846...978134492...31126440590....873971263352..24924114752042

%C ..5439936..190631336..6780688008..290583883424..10725570823166.399514227564720

%C .21769152.1005363146.46959680920.2718308070358.130884937973764

%H R. H. Hardin, <a href="/A237332/b237332.txt">Table of n, a(n) for n = 1..112</a>

%F Empirical for column k:

%F k=1: a(n) = 288*a(n-4) -6720*a(n-8) +33536*a(n-12) for n>15

%F k=2: [order 32] for n>34

%e Some solutions for n=3 k=4

%e ..0..1..0..2..2....0..2..1..0..2....0..0..1..2..2....0..1..0..1..1

%e ..0..1..1..1..2....2..1..2..0..2....2..1..2..2..2....1..0..2..1..0

%e ..0..2..2..1..0....1..0..0..2..1....1..0..2..2..1....0..0..0..0..1

%e ..2..0..1..2..2....0..2..2..1..2....2..2..2..1..0....1..1..2..0..0

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Feb 06 2014

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Last modified August 7 08:03 EDT 2024. Contains 375008 sequences. (Running on oeis4.)