A297977 - OEIS

%I #4 Jan 10 2018 06:55:01

%S 0,104,2410,60427,3565760,160132152,7833283900,380347270776,

%T 18479502350618,900718473284558,43858541975987311,2137007759512119065,

%U 104116892327060952223,5072908488571026582866,247172021246746231328931

%N Number of nX7 0..1 arrays with every element equal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 7 of A297978.

%H R. H. Hardin, <a href="/A297977/b297977.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A297978.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 10 2018