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 A221253 Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2 1
 16, 2500, 488601, 103489929, 22466712321, 4919350997521, 1080371161000000, 237502965724417600, 52227958295629168900, 11486303574511411132081, 2526218624607638969433649, 555604441977129578423379025 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A221255 LINKS R. H. Hardin, Table of n, a(n) for n = 1..13 EXAMPLE Some solutions for n=3 ..0..1..2..2..1..2....0..1..2..1..2..1....0..2..2..0..2..2....0..2..2..1..0..1 ..1..1..1..1..1..0....0..2..1..1..2..0....0..2..1..1..2..1....0..1..1..1..2..0 ..0..1..2..1..1..0....1..1..0..1..1..1....0..1..0..0..2..0....0..2..2..0..2..1 CROSSREFS Sequence in context: A227658 A298197 A016876 * A123282 A091160 A049030 Adjacent sequences:  A221250 A221251 A221252 * A221254 A221255 A221256 KEYWORD nonn AUTHOR R. H. Hardin Jan 06 2013 STATUS approved

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Last modified December 4 12:19 EST 2021. Contains 349494 sequences. (Running on oeis4.)