A232261 - OEIS

%I #4 Nov 21 2013 06:25:23

%S 723,52779,4987471,544777651,60698037193,6678855359891,

%T 736185965972615,81157499885585233,8946595022473277457,

%U 986241983067967479191,108719927841904034425147,11984921734705824859993765

%N Number of (4+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor

%C Row 4 of A232257

%H R. H. Hardin, <a href="/A232261/b232261.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 21 2013