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

%I #5 Dec 18 2015 18:18:34

%S 3,36,788,19608,495985,12340932,300892325,7202270426,169987960308,

%T 3972599259664,92292550974356

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

%C Diagonal of A224353

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 04 2013