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A185486 Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant 1
14860, 1642258, 104300522, 8249951270, 596127705496, 44794190542169, 3312295977303361, 246617622494198862, 18309597796319735490, 1361005199466774826914, 101116081602410498451624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A185487

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..21

EXAMPLE

Some solutions for 3X9

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

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

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

CROSSREFS

Sequence in context: A209947 A023045 A186901 * A031815 A235236 A203404

Adjacent sequences:  A185483 A185484 A185485 * A185487 A185488 A185489

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 28 2011

STATUS

approved

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Last modified July 30 21:33 EDT 2021. Contains 346365 sequences. (Running on oeis4.)