A236010 - OEIS

%I #4 Jan 18 2014 13:47:58

%S 81,1126,13750,95848,805458,5805712,46936958,297400544,2301395022,

%T 14676949336,112821800002,703842426432,5358265271090,33699329986640,

%U 255391459490526,1606272713154432

%N Number of (n+1)X(n+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock

%C Diagonal of A236018

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 18 2014