A254977 - OEIS

%I #4 Feb 11 2015 10:13:55

%S 94351,2243657,57587977,951267911,18669294271,386436174713,

%T 7506000777648,145847668391275,2900830105049490,57118339761224326,

%U 1122049943267876632,22112705475392097501,435706316389694278197,8575771122835177541348

%N Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 and no column sum 0

%C Column 7 of A254978

%H R. H. Hardin, <a href="/A254977/b254977.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 11 2015