A231244 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, no adjacent elements equal, and upper left element zero

0, 572, 22460, 1081934, 52280836, 2532190370, 122516675112, 5929632659798, 286977959791124, 13889029266631118, 672194585361641260, 32532561867929917938, 1574495801177251479112, 76201716513448711380190

Offset

1,2

Comments

Column 6 of A231246

Links

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

R. H. Hardin, Empirical recurrence of order 74

Formula

Empirical recurrence of order 74 (see link above)

Example

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

Crossrefs

Sequence in context: A360129 A252632 A263813 * A252115 A090495 A092291

Adjacent sequences: A231241 A231242 A231243 * A231245 A231246 A231247

Keyword

nonn

Author

R. H. Hardin, Nov 06 2013

Status

approved