%I
%S 4,100,6094,497958,45648753,4364554008,424124440444,41437298593764,
%T 4056267677083719,397503667576768219
%N Number of n X n 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing
%C Diagonal of A224391
%e Some solutions for n=3
%e ..1..1..1....1..1..2....1..2..3....0..0..1....1..2..2....1..3..3....1..1..1
%e ..0..2..2....2..2..3....3..3..3....2..2..3....2..3..3....2..3..3....1..2..2
%e ..2..3..3....0..2..2....1..1..2....1..2..2....0..0..1....0..1..3....0..2..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 05 2013
