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A251291 Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally 1

%I #4 Dec 01 2014 11:32:55

%S 1691,21966,202882,2645966,25654154,322933003,3232216177,39571705178,

%T 405845538185,4863503527792,50827817852319,599113339096458,

%U 6352973392705472,73931887999623433,792828826324721512

%N Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally

%C Column 7 of A251292

%H R. H. Hardin, <a href="/A251291/b251291.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 01 2014

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Last modified May 14 05:12 EDT 2024. Contains 372528 sequences. (Running on oeis4.)