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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 October 31 12:53 EDT 2020. Contains 338101 sequences. (Running on oeis4.)