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A202897 Number of (n+2)X9 binary arrays avoiding patterns 001 and 010 in rows, columns and nw-to-se diagonals. 1

%I #8 Jul 19 2023 10:16:49

%S 46270,518500,7994866,109801091,1420515543,18894802636,251440992886,

%T 3312356387937,43639603596020,575552626633363,7582782570210296,

%U 99855613120777677,1315138193425117085,17319877110051433700

%N Number of (n+2)X9 binary arrays avoiding patterns 001 and 010 in rows, columns and nw-to-se diagonals.

%H R. H. Hardin, <a href="/A202897/b202897.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%Y Column 7 of A202898.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 25 2011

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)