A255083 - OEIS

%I #5 Feb 14 2015 10:42:50

%S 108,522,1824,9484,70938,753882,10823026,176178559,3305817620,

%T 82918328052,2746333257006,118710393614388,6794688877081612,

%U 469187907165707478,38126739957364378305,4062963394164596026433

%N Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0

%C Diagonal of A255091

%H R. H. Hardin, <a href="/A255083/b255083.txt">Table of n, a(n) for n = 1..22</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A255091

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 14 2015