%I #3 Jan 10 2014 07:39:50
%S 2304,60231,1607343,33361964,681329430,11371435264,191226875455,
%T 2693722807642,38797084056738,475948685808390,6010295272057196,
%U 65600903066982746,737945948050343658,7275182009966196680
%N Number of (3+1)X(n+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise
%C Row 3 of A235421
%e Some solutions for n=2
%e ..2..0..1....2..0..0....0..0..0....0..0..1....1..0..1....2..0..1....0..1..0
%e ..0..0..0....1..0..2....2..0..1....1..0..0....2..0..1....0..0..1....2..0..0
%e ..0..2..1....0..2..2....0..1..2....1..1..0....1..2..1....2..2..0....2..2..2
%e ..1..2..2....2..1..0....2..2..2....0..2..2....2..2..1....2..2..0....2..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 10 2014
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