A241300 Number of n X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

2, 6, 37, 330, 6718, 490486, 70316883, 30759996872

Offset

1,1

Comments

Diagonal of A241306

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A275904 A014052 A014056 * A113375 A117266 A259437

Adjacent sequences: A241297 A241298 A241299 * A241301 A241302 A241303

Keyword

nonn

Author

R. H. Hardin, Apr 18 2014

Status

approved