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 A231112 Number of 6Xn 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero 1
 0, 0, 1042, 35430, 1217338, 48463174, 1961000570, 78805506362, 3163809352134, 127075246533516, 5104908131979946, 205083996374760976, 8239173296253048570, 331008778241613679598, 13298338137581417888288, 534264348658776180651244 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 6 of A231108 LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for n=4 ..0..1..2..1....0..1..2..0....0..1..2..3....0..1..0..3....0..1..2..1 ..0..3..2..1....0..3..1..0....2..3..0..1....2..3..0..1....0..3..2..1 ..2..1..0..1....1..2..3..2....2..1..2..3....2..3..2..3....0..1..3..2 ..0..1..2..1....1..2..1..0....0..3..0..3....2..1..0..3....3..0..1..2 ..0..3..0..3....1..0..3..2....2..1..2..1....0..1..0..1....1..2..3..2 ..2..1..0..3....1..2..1..0....0..3..2..1....2..3..2..1....1..0..3..2 CROSSREFS Sequence in context: A168412 A183742 A252618 * A213811 A260205 A224604 Adjacent sequences: A231109 A231110 A231111 * A231113 A231114 A231115 KEYWORD nonn AUTHOR R. H. Hardin, Nov 03 2013 STATUS approved

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Last modified November 28 20:13 EST 2022. Contains 358421 sequences. (Running on oeis4.)