A316882 - OEIS

%I #4 Jul 15 2018 14:12:56

%S 64,752,4121,54613,843479,11791971,180224021,3018929955,51534776482,

%T 877296039204,15194081872285,265477983265435,4625795530065981,

%U 80883069730756434,1417074349670845698,24801777957824236638

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316883.

%H R. H. Hardin, <a href="/A316882/b316882.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316883.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 15 2018