A265592 - OEIS

A265592

Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.

%I #4 Dec 10 2015 07:55:12

%S 3,79,9327,927797,82725668,12404184853,1961916558139,205199911524811,

%T 32566506281706134,3625304390972323537,618755342504397622109,

%U 87849263845468588422281,14938881681298157851105131

%N Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.

%C Row 3 of A265590.

%H R. H. Hardin, <a href="/A265592/b265592.txt">Table of n, a(n) for n = 1..112</a>

%e Some solutions for n=3

%e ..0..8..0....0..4..6....0..8..0....0..4..0....0..4..5....0..1..0....0..4..5

%e ..0..1..5....6..4..8....0..4..5....3..2..3....5..4..3....5..1..3....6..7..8

%e ..2..6..8....8..6..8....5..6..8....6..7..8....3..4..8....0..4..8....5..4..8

%Y Cf. A265590.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 10 2015