A236590 - OEIS

%I #4 Jan 29 2014 06:50:41

%S 2968,80008,2181116,59464564,1618144324,44032289456,1198678030904,

%T 32632424118312,888260075143676,24178458609189628,658161603799159464,

%U 17915900619841392804,487684497575036800836,13275130575831961753824

%N Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock

%C Column 2 of A236592

%H R. H. Hardin, <a href="/A236590/b236590.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..2..0..0....0..2..0....3..2..2....2..1..1....1..2..1....1..0..0....0..3..3

%e ..3..2..0....1..3..3....0..3..0....2..2..0....1..3..3....1..3..3....2..1..0

%e ..0..3..0....3..0..0....1..0..3....3..2..3....3..3..3....3..1..2....0..2..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 29 2014