login
Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
1

%I #4 Jan 19 2018 08:04:20

%S 1,22,86,406,3963,72509,610525,9392919,119508030,1732328018,

%T 23999922911,340723206746,4837106387318,68861322126222,

%U 979990257263793,13966057949592703,199007337584181820,2836767273608895105

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

%C Column 7 of A298444.

%H R. H. Hardin, <a href="/A298443/b298443.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298444.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 19 2018