A238521 Number of (n+1)X(4+1) 0..3 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors

74676, 10332060, 5576504976, 2197236920100, 926028739793772, 384603811149627048, 160244098029692394444, 66719231482289160388356, 27783378778566097617975744, 11569243392276205415354307780

Offset

1,1

Comments

Column 4 of A238523

Links

R. H. Hardin, Table of n, a(n) for n = 1..54

Example

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

Crossrefs

Sequence in context: A033448 A234725 A058415 * A104846 A206127 A230221

Adjacent sequences: A238518 A238519 A238520 * A238522 A238523 A238524

Keyword

nonn

Author

R. H. Hardin, Feb 28 2014

Status

approved