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 A236880 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal 1

%I

%S 1523,7995,40199,316921,2265637,19772641,163853211,1470283561,

%T 12922658673,117130624281,1053941222501,9597003044005,87182660323649,

%U 795698692769187,7257199324152419,66312291235989759,605826618814826233

%N Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal

%C Column 4 of A236884

%H R. H. Hardin, <a href="/A236880/b236880.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 01 2014

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Last modified September 28 15:31 EDT 2021. Contains 347716 sequences. (Running on oeis4.)