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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 June 25 04:54 EDT 2024. Contains 373697 sequences. (Running on oeis4.)