cp's OEIS Frontend

A184759 Half the number of nX7 binary arrays with no 1 having an adjacent 1 both above and to its left.

%I A184759 #7 Jul 22 2025 09:42:39
%S A184759 64,4021,287802,20148584,1415755252,99419347147,6982256142285,
%T A184759 490358739919898,34437619490245450,2418533807739519677,
%U A184759 169852219543126318591,11928622276532341733243,837740183488415335215180
%N A184759 Half the number of nX7 binary arrays with no 1 having an adjacent 1 both above and to its left.
%C A184759 Column 7 of A184761
%H A184759 R. H. Hardin, <a href="/A184759/b184759.txt">Table of n, a(n) for n = 1..200</a>
%e A184759 Some solutions for 3X7
%e A184759 ..0..1..0..1..0..1..0....0..0..1..0..0..1..1....0..1..0..1..1..0..0
%e A184759 ..0..0..1..0..1..0..0....0..0..0..1..1..0..0....0..1..0..0..1..0..0
%e A184759 ..0..1..0..0..1..0..1....1..0..0..0..1..1..0....0..0..0..0..0..1..1
%K A184759 nonn
%O A184759 1,1
%A A184759 _R. H. Hardin_ Jan 21 2011