A240258 Number of n X 4 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

38, 429, 5610, 85567, 1350983, 21525611, 344032061, 5504564819, 88114108260, 1410765109841, 22589359933633, 361719900495878, 5792291679947240, 92754126379934041, 1485314698157014423, 23785098104284400833, 380883395228717572854, 6099292346848890713699, 97671312109551982055275

Offset

1,1

Links

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

Example

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

Crossrefs

Column 4 of A240260.

Sequence in context: A221634 A251056 A267474 * A254471 A039685 A389503

Adjacent sequences: A240255 A240256 A240257 * A240259 A240260 A240261

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved