A239997 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

5, 42, 526, 6527, 86360, 1225281, 18392485, 290513038, 4767970186, 80410934960, 1381071762609, 24002339457710, 420292066661594, 7394152265405038, 130463578696387397, 2306049013760669647, 40806118077181581732

Offset

1,1

Comments

Column 4 of A240000

Links

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

Example

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

Crossrefs

Sequence in context: A052654 A108398 A370907 * A102244 A323313 A363435

Adjacent sequences: A239994 A239995 A239996 * A239998 A239999 A240000

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved