A232404 Number of (n+1)X(6+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.

52, 356, 1500, 16884, 71888, 798692, 3508240, 38129964, 171206912, 1824149740, 8352753972, 87316419000, 407323786128, 4180934712540, 19852174972388, 200249586845236, 967026542169300, 9593629828096476, 47080701757717856

Offset

1,1

Comments

Column 6 of A232406

Links

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

Example

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

Crossrefs

Sequence in context: A262757 A262477 A264494 * A257940 A005946 A200549

Adjacent sequences: A232401 A232402 A232403 * A232405 A232406 A232407

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved