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 A216333 Number of horizontal and antidiagonal neighbor colorings of the even squares of an nX3 array with new integer colors introduced in row major order 1
 1, 2, 15, 52, 877, 4140, 115975, 678570, 27644437, 190899322, 10480142147, 82864869804, 5832742205057, 51724158235372, 4506715738447323, 44152005855084346, 4638590332229999353, 49631246523618756274 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A216338 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..0..x..1....0..x..1....0..x..1....0..x..1....0..x..1....0..x..1....0..x..1 ..x..2..x....x..2..x....x..2..x....x..0..x....x..2..x....x..2..x....x..2..x ..3..x..0....3..x..1....1..x..2....2..x..0....3..x..2....1..x..0....3..x..4 ..x..1..x....x..3..x....x..3..x....x..3..x....x..4..x....x..1..x....x..5..x CROSSREFS Sequence in context: A344819 A015520 A098520 * A056078 A142861 A305673 Adjacent sequences: A216330 A216331 A216332 * A216334 A216335 A216336 KEYWORD nonn AUTHOR R. H. Hardin Sep 04 2012 STATUS approved

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Last modified March 31 17:43 EDT 2023. Contains 361670 sequences. (Running on oeis4.)