A224006 - OEIS

%I #5 Dec 18 2015 18:18:33

%S 3,36,868,28541,1108969,47735665,2200064042,106468976628,

%T 5346274348879,276427362685199,14638913051219770,790954334539356094,

%U 43473056647367595435,2424900281957535784114,137007153893707984264455

%N Number of n X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal

%C Diagonal of A224012

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 30 2013