A297681 - OEIS

%I #4 Jan 03 2018 09:28:23

%S 81,1632,52889,1519630,45865837,1368968852,41030621948,1229127412701,

%T 36837288191422,1103993847036050,33088254114520559,991712287397354032,

%U 29723613829882860702,890879134522839275761,26701570968782131551720

%N Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1s.

%C Column 7 of A297682.

%H R. H. Hardin, <a href="/A297681/b297681.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A297682.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2018