A253485 Number of (4+1)X(n+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically

27000, 1066300, 44943722, 1878758740, 78770049974, 3299718630574, 138306215163096, 5795836568371696, 242904782424601668, 10179772843302464230, 426626399166621668992, 17879460458074006160518

Offset

1,1

Comments

Row 4 of A253482

Links

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

Example

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

Crossrefs

Sequence in context: A176359 A162144 A305728 * A253480 A186136 A159995

Adjacent sequences: A253482 A253483 A253484 * A253486 A253487 A253488

Keyword

nonn

Author

R. H. Hardin, Jan 02 2015

Status

approved