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A185806 Number of (n+1)X9 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace 0
85438016, 847003638592, 3849846787713472, 21422296324609759008, 114404199665472905793216 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 8 of A185807
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
Some solutions for 3X9
..0..0..0..0..3..2..0..3..0....0..0..0..0..1..0..0..0..1
..0..0..0..0..0..0..1..1..1....0..0..0..0..0..0..1..1..1
..0..0..0..0..0..0..1..0..3....0..0..0..0..0..0..0..3..3
CROSSREFS
Sequence in context: A295465 A230794 A186922 * A115534 A138030 A104964
Adjacent sequences: A185803 A185804 A185805 * A185807 A185808 A185809
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 04 2011
STATUS
approved

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Last modified May 21 19:35 EDT 2024. Contains 372738 sequences. (Running on oeis4.)