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 A221238 Number of nX4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops 1
 0, 467, 67710, 8959341, 1130617545, 141336723259, 17607272065860, 2191088686237881, 272559108705818889, 33900194712220801503, 4216208061863101762098, 524365251673562024764232 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 4 of A221240 LINKS R. H. Hardin, Table of n, a(n) for n = 1..46 EXAMPLE Some solutions for n=3 ..0..1..0..0....0..0..0..0....0..3..1..2....0..1..0..2....0..2..0..1 ..0..3..0..3....2..3..0..1....1..1..0..0....2..1..1..1....1..1..4..0 ..2..1..1..1....2..2..1..1....2..1..1..0....1..1..2..0....0..1..2..0 CROSSREFS Sequence in context: A036340 A059395 A266163 * A114135 A043364 A054756 Adjacent sequences: A221235 A221236 A221237 * A221239 A221240 A221241 KEYWORD nonn AUTHOR R. H. Hardin Jan 06 2013 STATUS approved

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Last modified December 10 15:45 EST 2023. Contains 367713 sequences. (Running on oeis4.)