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

%I #4 Jan 25 2018 08:49:22

%S 0,54,1005,13650,309593,8287084,193439202,4672566734,112689610775,

%T 2731899175896,66122998854098,1599672498018255,38731486336940251,

%U 937609098603118557,22696092440623817595,549420999860489552558

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

%C Column 7 of A298719.

%H R. H. Hardin, <a href="/A298718/b298718.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298719.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 25 2018