A254383 - OEIS

%I #5 Jan 29 2015 19:50:56

%S 512,35529,8533796,6208345944,14008701570284,99661265319327258,

%T 2165666188993340904078,146977323440908911644985083,

%U 30949376415040215031162843169020,20149875590838758609564635874891385665

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

%C Diagonal of A254390

%H R. H. Hardin, <a href="/A254383/b254383.txt">Table of n, a(n) for n = 1..13</a>

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 29 2015