A253955 - OEIS

%I #4 Jan 20 2015 20:50:26

%S 2992,20868,148332,1048679,7777096,56216811,413408572,3015389036,

%T 22143665791,162054099330,1189259937083,8714159522541,63925042957075,

%U 468631209766465,3437131289287563,25202282873611349,184828179810768099

%N Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

%C Column 2 of A253961

%H R. H. Hardin, <a href="/A253955/b253955.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 20 2015