A239815 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it, modulo 4

24, 729, 18728, 510748, 13597573, 366379173, 9807771898, 263419973152, 7064275271994, 189566431524540, 5085635223031781, 136450277248685119, 3660861731265982119, 98220442090411319757, 2635213560025173917109

Offset

1,1

Comments

Column 4 of A239819

Links

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

Example

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

Crossrefs

Sequence in context: A289635 A105187 A062313 * A279659 A062528 A175604

Adjacent sequences: A239812 A239813 A239814 * A239816 A239817 A239818

Keyword

nonn

Author

R. H. Hardin, Mar 27 2014

Status

approved