%I
%S 4,128,19124,10624396,22494002188,187243393024012,6184286713271025676,
%T 813778114811695225372684,427490676925568251567286517772,
%U 897390142311167244989919805371842572
%N Number of n X n 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..1 array
%C Diagonal of A229392
%H R. H. Hardin, <a href="/A229385/b229385.txt">Table of n, a(n) for n = 1..12</a>
%e Some solutions for n=3
%e ..2..0..1....3..2..2....2..2..1....2..1..2....3..2..0....1..1..1....0..0..2
%e ..2..1..3....2..1..2....1..2..3....2..3..2....2..1..1....1..2..1....0..2..2
%e ..2..2..3....1..0..1....0..2..1....2..1..1....0..0..1....3..1..0....1..3..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Sep 21 2013
