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A186533 Number of (n+1)X7 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant 0
1448300, 471337960, 169733268904, 60763226187367, 21417901169134908 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A186536

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3X7

..0..0..1..0..2..0..2....0..0..1..0..2..2..1....0..0..1..0..0..1..2

..0..1..0..2..2..1..2....0..1..0..1..0..2..2....0..1..0..2..1..2..0

..1..0..1..1..1..0..2....1..0..1..0..1..0..0....1..0..1..1..0..0..1

CROSSREFS

Sequence in context: A124490 A124491 A205892 * A224974 A254584 A254591

Adjacent sequences:  A186530 A186531 A186532 * A186534 A186535 A186536

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 23 2011

STATUS

approved

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Last modified January 22 18:37 EST 2022. Contains 350488 sequences. (Running on oeis4.)