A317732 - OEIS

%I #4 Aug 05 2018 15:50:28

%S 8,5824,554642,67837952,8216055128,990049380944,119470846769818,

%T 14414412169370696,1739115942914291910,209827866262682657184,

%U 25316123747615739958168,3054437828693771208355664

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317733.

%H R. H. Hardin, <a href="/A317732/b317732.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A317732/a317732.txt">Empirical recurrence of order 81</a>

%F Empirical recurrence of order 81 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317733.

%K nonn

%O 1,1

%A _R. H. Hardin_, Aug 05 2018