%I #6 Dec 18 2015 18:17:32

%S 2,34,5257,7798591,108917015732,14221257369534380,

%T 17218452637947555486763

%N Number of n X n 0..2 arrays with each sum of a(1..i,1..j) no greater than i*j

%C Diagonal of A183419

%e Some solutions for 4X4

%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 04 2011