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A185922 Number of (n+1)X5 0..3 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant 0
687900, 328811578, 160170012852, 77659127557452, 37582792498003078, 18206165306257082286 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A185923

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X5

..0..2..3..1..2....0..2..0..1..1....0..2..1..1..2....0..2..3..0..3

..1..0..1..3..3....1..0..1..2..2....1..0..1..0..2....1..0..1..3..2

..2..2..0..1..3....0..2..3..1..0....2..2..3..2..3....0..2..3..1..0

CROSSREFS

Sequence in context: A185865 A238144 A205280 * A204788 A254773 A254780

Adjacent sequences:  A185919 A185920 A185921 * A185923 A185924 A185925

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2011

STATUS

approved

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Last modified September 21 16:31 EDT 2021. Contains 347598 sequences. (Running on oeis4.)