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 A221814 Number of nX3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns 1
 0, 16, 14, 379, 1052, 11079, 47390, 361950, 1871008, 12486680, 70263638, 442461347, 2585100812, 15871512853, 94285153508, 572472852419, 3425837212298, 20699323338492, 124271759172208, 749252532667069, 4504672207533346 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A221817 LINKS R. H. Hardin, Table of n, a(n) for n = 1..41 EXAMPLE Some solutions for n=3 ..1..1..1....0..1..1....0..1..1....0..2..1....0..2..1....0..1..1....1..1..1 ..0..2..0....0..2..1....1..2..0....0..2..1....1..3..0....1..3..0....0..3..0 ..1..3..0....1..3..0....1..3..0....1..2..0....1..1..0....1..2..0....1..2..0 CROSSREFS Sequence in context: A184752 A291468 A072311 * A159454 A334350 A306305 Adjacent sequences: A221811 A221812 A221813 * A221815 A221816 A221817 KEYWORD nonn AUTHOR R. H. Hardin Jan 26 2013 STATUS approved

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Last modified June 5 19:06 EDT 2023. Contains 363138 sequences. (Running on oeis4.)