A231047 Number of nX6 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero

0, 428, 5100, 310804, 10631552, 448752816, 17477913984, 702369644524, 27889180833188, 1112507026382520, 44300516313730388, 1765247886383707868, 70322056553003374268, 2801688699959758846796, 111617418686821238798432

Offset

1,2

Comments

Column 6 of A231049

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 93

Formula

Empirical recurrence of order 93 (see link above)

Example

Some solutions for n=4
..0..1..2..3..2..3....0..1..2..1..0..1....0..3..2..3..2..3....0..1..2..1..0..1
..0..3..2..3..0..1....0..3..0..3..2..3....0..1..0..1..0..1....0..3..2..1..2..3
..0..3..0..1..2..1....2..3..0..3..2..3....0..1..0..3..2..3....2..3..0..3..0..3
..0..1..2..1..0..3....2..1..0..3..0..1....2..3..2..1..0..1....2..1..2..1..2..3

Crossrefs

Sequence in context: A253505 A173798 A233812 * A177328 A243833 A334558

Adjacent sequences: A231044 A231045 A231046 * A231048 A231049 A231050

Keyword

nonn

Author

R. H. Hardin, Nov 03 2013

Status

approved