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A231113 Number of 7Xn 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, 5208, 318864, 19662930, 1459796386, 110728004898, 8325135556908, 625222341211040, 46996413742719636, 3534106116006985318, 265800575748345313780, 19992347081347722743586, 1503799843607486738579460 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 7 of A231108

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..33

EXAMPLE

Some solutions for n=4

..0..1..2..1....0..1..2..1....0..1..2..1....0..1..2..1....0..1..0..1

..0..3..0..3....0..3..0..1....0..3..2..1....0..3..2..0....2..3..2..1

..0..1..2..0....0..1..2..0....2..1..2..3....2..0..1..3....2..0..3..2

..3..0..1..0....0..3..1..2....0..3..0..3....3..2..0..1....1..2..1..0

..3..2..1..3....2..0..3..2....2..1..2..3....1..3..2..1....1..2..3..2

..1..3..0..1....3..2..3..2....0..3..0..3....2..1..3..0....1..2..1..2

..2..3..2..1....1..0..3..2....2..1..2..1....0..2..1..0....1..0..3..2

CROSSREFS

Sequence in context: A157511 A165599 A109159 * A289514 A031616 A067224

Adjacent sequences:  A231110 A231111 A231112 * A231114 A231115 A231116

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 03 2013

STATUS

approved

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Last modified September 27 18:40 EDT 2020. Contains 337386 sequences. (Running on oeis4.)