A254853 - OEIS

%I #6 Apr 18 2023 20:05:29

%S 110544,103684,216000,729316,2811104,12013156,50676440,192820996,

%T 677038812,2389645456,8994716592,36477180100,149567548816,

%U 578080419856,2112980405676,7642791993600,28538086816176,112257203522500

%N Number of (n+2) X (7+2) 0..1 arrays with no 3 X 3 subblock diagonal sum one and no antidiagonal sum two.

%C Column 7 of A254854.

%H R. H. Hardin, <a href="/A254853/b254853.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%Y Cf. A254854.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 08 2015