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A188307 Number of (n+1)X6 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums 1

%I

%S 380,14832,203584,3415196,53468700,878907878,14070003616,228625683370,

%T 3680915898074,59626244517814,962293522215168,15566719628153548,

%U 251445428797343950,4065446796913711010,65691624104999816724

%N Number of (n+1)X6 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums

%C Column 5 of A188311

%H R. H. Hardin, <a href="/A188307/b188307.txt">Table of n, a(n) for n = 1..22</a>

%e Some solutions for 3X6

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 27 2011

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Last modified May 20 06:11 EDT 2022. Contains 353852 sequences. (Running on oeis4.)