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A184204 Number of (n+1)X7 binary arrays with no 2X2 subblock containing fewer than two 1s 1

%I #5 Mar 31 2012 12:35:57

%S 3268,158648,6468501,281420718,12021784217,516844071813,

%T 22178227663588,952294826074262,40881902344878662,1755168245685353119,

%U 75352500961047758574,3235038360513128954137,138886585051318322739473

%N Number of (n+1)X7 binary arrays with no 2X2 subblock containing fewer than two 1s

%C Column 6 of A184207

%H R. H. Hardin, <a href="/A184204/b184204.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X7

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 10 2011

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Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)