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Number of n X 5 0..1 arrays with every element unequal to 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
1

%I #6 Jun 26 2022 20:58:06

%S 3,120,371,2080,11282,60568,334906,1852576,10208628,56476986,

%T 312311660,1726835768,9548532077,52807525484,292024665946,

%U 1614879713366,8930532980138,49386528451002,273109909878597,1510322716604761

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

%C Column 5 of A304959.

%H R. H. Hardin, <a href="/A304956/b304956.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304959.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 22 2018