cp's OEIS Frontend

A284770 Number of n X 7 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

%I A284770 #6 Apr 05 2020 23:04:43
%S A284770 28,2896,298003,31677488,3595841703,415218866820,48994677634459,
%T A284770 5840008221148574,702889504624919147,85151294479167806690,
%U A284770 10373863251897460544155,1269424721127000908485982
%N A284770 Number of n X 7 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.
%C A284770 Column 7 of A284771.
%H A284770 R. H. Hardin, <a href="/A284770/b284770.txt">Table of n, a(n) for n = 1..19</a>
%e A284770 Some solutions for n=2
%e A284770 ..0..1..1..0..0..1..1. .0..0..1..1..0..0..0. .0..0..1..0..1..1..0
%e A284770 ..0..1..0..0..0..1..1. .1..1..0..1..0..0..1. .0..0..1..1..0..0..0
%Y A284770 Cf. A284771.
%K A284770 nonn
%O A284770 1,1
%A A284770 _R. H. Hardin_, Apr 02 2017