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

0, 0, 1042, 35430, 1217338, 48463174, 1961000570, 78805506362, 3163809352134, 127075246533516, 5104908131979946, 205083996374760976, 8239173296253048570, 331008778241613679598, 13298338137581417888288, 534264348658776180651244

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