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Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor
1

%I #5 Mar 31 2012 12:36:44

%S 9,175,3354,91425,2446147,61807736,1408677515,28646055184,

%T 523398227137,8686880778087,132361720458239,1868645862989467,

%U 24631940812325029,305098771555173655,3569810381726216867,39630824798203404663

%N Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor

%C Column 5 of A201539

%H R. H. Hardin, <a href="/A201536/b201536.txt">Table of n, a(n) for n = 1..160</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 02 2011