A186901 - OEIS

A186901

Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants

14860, 19040, 122820, 608194, 2203303, 12599670, 85310077, 523902288, 2795274149, 16608468926, 108609778968, 679604170463, 3947135094182, 24085962638564, 153869560878987, 960883396722563, 5783252949932518

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OFFSET

1,1

COMMENTS

Column 8 of A186902

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 3X9

..1..1..0..0..1..1..1..1..0....0..0..0..1..1..1..0..0..1

..0..1..1..1..1..0..0..1..1....0..0..1..1..0..1..1..0..0

..0..0..0..0..1..1..0..0..0....0..0..1..0..0..0..1..1..1