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 A222661 Number of nX3 0..3 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
 0, 2, 2, 44, 110, 2686, 7624, 186400, 568750, 13426930, 43148672, 976797964, 3288287090, 71553941138, 250795793620, 5271389823322, 19133542669712, 390312748312702, 1460010782595862, 29031771420777158, 111430693524389896 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A222666 LINKS R. H. Hardin, Table of n, a(n) for n = 1..201 EXAMPLE All solutions for n=3 ..0..0..0....0..0..1 ..0..0..0....0..0..0 ..1..0..0....0..0..0 CROSSREFS Sequence in context: A349602 A156467 A303538 * A015167 A086204 A318085 Adjacent sequences:  A222658 A222659 A222660 * A222662 A222663 A222664 KEYWORD nonn AUTHOR R. H. Hardin Feb 28 2013 STATUS approved

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Last modified December 5 15:06 EST 2021. Contains 349557 sequences. (Running on oeis4.)