A235755 - OEIS

%I #4 Jan 15 2014 09:05:01

%S 15782,996868,68186440,3951955004,229794497298,11883494266538,

%T 593235221174732,27256390817706239,1196211281372270826,

%U 49366884980552894414,1949628589021761460325,73414944182224778086972

%N Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

%C Column 4 of A235756

%H R. H. Hardin, <a href="/A235755/b235755.txt">Table of n, a(n) for n = 1..42</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2014