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 A235419 Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1

%I

%S 2304,60879,1607343,33411901,692896087,11682620720,200551110843,

%T 2871917717259,42041935330149,525298071602797,6697226820277449,

%U 74334917602209111,839152459304377096,8384862572475130200

%N Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise

%C Column 3 of A235421

%H R. H. Hardin, <a href="/A235419/b235419.txt">Table of n, a(n) for n = 1..151</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 10 2014

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Last modified January 20 14:02 EST 2020. Contains 331094 sequences. (Running on oeis4.)