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Number of (n+2) X (7+2) 0..1 arrays with every 3 X 3 subblock diagonal maximum plus antidiagonal median nondecreasing horizontally and vertically.
1

%I #6 Jan 20 2024 16:50:01

%S 5525648,275822532,15314952024,715315448772,30656386352160,

%T 1288757443440100,52039375590860424,2060018092869654572,

%U 81182820780968440452,3187607283556025809756,124900984913086077532048

%N Number of (n+2) X (7+2) 0..1 arrays with every 3 X 3 subblock diagonal maximum plus antidiagonal median nondecreasing horizontally and vertically.

%C Column 7 of A253801.

%H R. H. Hardin, <a href="/A253800/b253800.txt">Table of n, a(n) for n = 1..29</a>

%e Some solutions for n=1

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

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

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

%Y Cf. A253801.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 13 2015