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 A222788 Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
 0, 3, 8, 55, 294, 1883, 11920, 78255, 517050, 3451712, 23156964, 156076271, 1055435486, 7157673375, 48656943008, 331450961443, 2261939399694, 15461147598417, 105834401893220, 725394224374344, 4977715076045096 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 2 of A222794 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE All solutions for n=3 ..0..1....0..0....0..1....0..0....0..0....0..0....0..0....0..0 ..0..0....1..0....2..2....1..2....0..0....0..1....0..1....0..0 ..0..0....0..0....2..2....2..2....1..0....2..2....0..0....1..2 CROSSREFS Sequence in context: A322461 A192647 A121567 * A308572 A101361 A104034 Adjacent sequences:  A222785 A222786 A222787 * A222789 A222790 A222791 KEYWORD nonn AUTHOR R. H. Hardin Mar 05 2013 STATUS approved

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Last modified May 26 08:00 EDT 2022. Contains 354077 sequences. (Running on oeis4.)