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A254992 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally and vertically 1

%I

%S 2679,14320,70331,369357,1939341,10216539,54357112,289904665,

%T 1544994778,8237573436,43939277433,234399968825,1250409023076,

%U 6670253180113,35582350188965,189813584961248,1012551819177382,5401379190197737

%N Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally and vertically

%C Column 2 of A254998

%H R. H. Hardin, <a href="/A254992/b254992.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%Y Cf. A254998

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 11 2015

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Last modified September 21 01:46 EDT 2021. Contains 347596 sequences. (Running on oeis4.)