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Number of nX7 0..1 arrays with each 1 adjacent to 3 or 4 king-move neighboring 1s.
1

%I #4 Dec 04 2017 20:35:02

%S 1,31,163,528,14057,197661,1993970,34228975,553395326,7928926956,

%T 124899730636,1980681750366,30488334143159,475731319452531,

%U 7458437039181799,116223839824981401,1813729259133179024

%N Number of nX7 0..1 arrays with each 1 adjacent to 3 or 4 king-move neighboring 1s.

%C Column 7 of A296115.

%H R. H. Hardin, <a href="/A296114/b296114.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

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

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

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

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

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

%Y Cf. A296115.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 04 2017