A240263 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the 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, 342, 5484, 85567, 1378558, 22319938, 362690826, 5898993727, 95992458400, 1562396067329, 25432861065027, 414021867841448, 6740052707172499, 109725934863624789, 1786316156857741452, 29080970908527870835

Offset

1,1

Comments

Row 4 of A240260

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Sequence in context: A204070 A242209 A201244 * A156661 A249711 A220918

Adjacent sequences: A240260 A240261 A240262 * A240264 A240265 A240266

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved