A205418 Number of (n+1)X3 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors

2768, 62716, 1448498, 33701202, 782598960, 18167227774, 421657055138, 9789425083082, 227224401122368, 5275018373510432, 122445180549684530, 2842463146633784148, 65981768963303928002, 1531684236219961864660

Offset

1,1

Comments

Column 2 of A205422

Links

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

Example

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

Crossrefs

Sequence in context: A198451 A205288 A205896 * A231709 A046332 A046380

Adjacent sequences: A205415 A205416 A205417 * A205419 A205420 A205421

Keyword

nonn

Author

R. H. Hardin Jan 27 2012

Status

approved