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A237101 Number of (n+1)X(1+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal 1

%I #4 Feb 03 2014 06:14:43

%S 81,385,1881,9491,48569,252415,1324297,7013479,37376009,200312023,

%T 1077728201,5817662711,31477339337,170637062839,926272600521,

%U 5033545168183,27374673893833,148966846198839,811006553994697

%N Number of (n+1)X(1+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal

%C Column 1 of A237108

%H R. H. Hardin, <a href="/A237101/b237101.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 9*a(n-1) -166*a(n-3) +224*a(n-4) +820*a(n-5) -1088*a(n-6) -1608*a(n-7) +1712*a(n-8) +1280*a(n-9) -832*a(n-10) -320*a(n-11)

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 03 2014

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Last modified April 24 02:46 EDT 2024. Contains 371917 sequences. (Running on oeis4.)