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A187438 Number of (n+1)X7 0..2 arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors 0
3022484, 3319295436, 3677337022406, 4086873166309438, 4538075433355553643 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A187441
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
Some solutions for 3X7
..0..0..0..0..0..1..0....0..0..0..1..1..0..1....0..0..0..0..1..2..2
..0..1..0..1..2..2..0....0..1..0..1..1..0..2....0..1..0..1..2..1..0
..0..0..0..2..1..1..0....0..0..0..0..2..2..0....0..0..0..2..2..0..0
CROSSREFS
Sequence in context: A224077 A114065 A268405 * A184374 A205932 A281447
Adjacent sequences: A187435 A187436 A187437 * A187439 A187440 A187441
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 10 2011
STATUS
approved

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Last modified August 18 17:29 EDT 2024. Contains 375269 sequences. (Running on oeis4.)