A232521 Number of (6+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal

52, 11900, 4416, 1110752, 399122, 105188684, 38988416, 9962578834, 3778921534, 943473527702, 366611360006, 89351184548884, 35541201208134, 8461935007869746, 3443798169301412, 801382290095806940, 333518031672301528

Offset

1,1

Comments

Row 6 of A232515

Links

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

R. H. Hardin, Empirical recurrence of order 90

Formula

Empirical recurrence of order 90 (see link above)

Example

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

Crossrefs

Sequence in context: A209462 A209524 A208100 * A346934 A200806 A208305

Adjacent sequences: A232518 A232519 A232520 * A232522 A232523 A232524

Keyword

nonn

Author

R. H. Hardin, Nov 25 2013

Status

approved