|
%I #4 Jun 15 2018 06:19:23
%S 8,5824,264680,17617201,1088558635,68109190612,4251930563544,
%T 265585355341963,16586555684575766,1035918306523085734,
%U 64698106959674584155,4040715102616009846706,252362495353182410193096
%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
%C Column 7 of A305961.
%H R. H. Hardin, <a href="/A305960/b305960.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..0..1..0..0. .0..0..1..0..1..0..1. .0..0..1..0..1..0..1
%e ..0..1..0..0..1..0..1. .0..1..0..1..0..1..1. .0..1..0..1..0..1..1
%e ..0..0..0..1..0..1..1. .0..0..0..0..1..0..0. .0..0..0..0..1..1..0
%e ..0..0..0..0..0..0..0. .0..0..0..0..1..0..0. .0..0..0..1..0..1..0
%e ..0..1..0..0..1..1..0. .0..1..0..1..1..1..1. .0..1..0..1..1..1..1
%Y Cf. A305961.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jun 15 2018
| 