The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Nov 30 2014 20:21:24
%S 1477,17119,206715,2746607,35978029,482274751,6424279907,86110233175,
%T 1151625700234,15428988432635,206554265595500,2766688606209457,
%U 37049013254772388,496208364895357327,6645304659025154869
%N Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having zero or two 1s
%C Column 7 of A251219
%H R. H. Hardin, <a href="/A251218/b251218.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..1..1..0..0..1..1..1..1....0..0..1..1..0..1..0..0....1..1..1..1..0..1..1..1
%e ..1..0..0..1..1..1..1..0....0..1..1..1..1..1..1..0....1..1..0..1..1..1..0..1
%e ..1..1..0..0..1..1..1..1....0..0..1..1..0..1..0..0....1..0..0..0..1..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 30 2014