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 A235420 Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1

%I

%S 9504,543946,33361964,1782209164,94717997107,4225274664375,

%T 190528055285203,7249712636712619,281101937356383963,

%U 9327004899765220720,316252724455345595134,9306235681834123612150,279837916042101514803656

%N Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise

%C Column 4 of A235421

%H R. H. Hardin, <a href="/A235420/b235420.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 10 2014

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Last modified December 12 09:36 EST 2019. Contains 329953 sequences. (Running on oeis4.)