A250456 - OEIS

%I #4 Nov 23 2014 17:42:01

%S 373248,17318918,772693886,32602562806,1275994883882,48782075567391,

%T 1821064698359512,66622768121582144,2411041836414244648,

%U 86445981340311543372,3077820289047843771294,109070560585937699044788

%N Number of (n+2)X(2+2) 0..2 arrays with nondecreasing maximum of every three consecutive values in every row and column

%C Column 2 of A250459

%H R. H. Hardin, <a href="/A250456/b250456.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 23 2014