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%I #6 Dec 18 2015 18:17:58
%S 1,16,7785,18530502,474618867194,149902909246835321,
%T 535800823449864962697227,20614712434599379183066014500691,
%U 8729478655533855038607697299128077953713
%N Number of n X n 0..3 arrays with every nonzero element less than or equal to some NW, E or S neighbor
%C Diagonal of A203397
%e Some solutions for n=4
%e ..2..3..1..3....1..0..0..0....2..1..1..0....0..2..3..3....1..3..1..3
%e ..2..3..1..3....1..3..1..2....2..1..1..1....0..1..2..3....3..3..1..3
%e ..3..3..3..3....1..3..2..2....2..2..2..1....2..3..1..1....1..3..3..3
%e ..0..1..2..3....3..3..3..2....0..0..2..0....1..3..3..0....1..3..3..3
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 01 2012
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