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 A222631 Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order 1
 4, 10, 34, 161, 707, 3309, 16892, 89384, 465258, 2414240, 12658133, 66882546, 353898321, 1874207359, 9950624881, 52968141606, 282452336722, 1508213363988, 8064519904852, 43179574656064, 231467793567740, 1242085617391923 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A222635 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 EXAMPLE Some solutions for n=3 ..0..0..0..1....0..0..1..1....0..0..0..0....0..1..0..0....0..0..1..1 ..0..0..1..1....1..1..1..1....0..0..0..0....0..0..0..0....0..1..1..1 ..0..0..1..1....1..1..1..1....0..1..0..0....0..0..0..0....0..1..1..1 CROSSREFS Sequence in context: A149173 A149174 A283070 * A030003 A234009 A198324 Adjacent sequences:  A222628 A222629 A222630 * A222632 A222633 A222634 KEYWORD nonn AUTHOR R. H. Hardin Feb 26 2013 STATUS approved

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Last modified December 7 20:18 EST 2019. Contains 329847 sequences. (Running on oeis4.)