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A185608 Number of (n+1)X5 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant 0
22236, 3017724, 173403770, 15211806726, 1112996493332 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A185609

LINKS

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

EXAMPLE

Some solutions for 3X5

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

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

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

CROSSREFS

Sequence in context: A060109 A217875 A253737 * A204148 A251825 A119568

Adjacent sequences:  A185605 A185606 A185607 * A185609 A185610 A185611

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)