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 A237060 Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal 1

%I

%S 81,255,826,2823,9815,34996,125469,457125,1664894,6142099,22586567,

%T 84018940,311018349,1163797285,4328792462,16268051859,60722854295,

%U 228929149516,856718666317,3237411387189,12138170248222,45946152057331

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

%C Column 1 of A237067

%H R. H. Hardin, <a href="/A237060/b237060.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 5*a(n-1) +20*a(n-2) -121*a(n-3) -85*a(n-4) +876*a(n-5) +42*a(n-6) -2664*a(n-7) +168*a(n-8) +3696*a(n-9) -144*a(n-10) -2176*a(n-11) +384*a(n-13)

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 03 2014

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Last modified January 19 08:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)