A297755 - OEIS

%I #4 Jan 05 2018 16:05:10

%S 1,276,16384,162828,2561262,92963365,2703029494,57155337030,

%T 1344335869151,36051773147255,927829330936828,22707629564795527,

%U 566201614678280167,14406155879194342103,363861774395456902677

%N Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s.

%C Row 7 of A297749.

%H R. H. Hardin, <a href="/A297755/b297755.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

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

%Y Cf. A297749.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 05 2018