A240323 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

4, 17, 116, 455, 1677, 8091, 28448, 117304, 513841, 1871262, 7963314, 32859835, 125032724, 531287384, 2129046798, 8380565700, 35092450158, 139319279619, 559869375850, 2308650810237, 9177286253390, 37241010454269, 151821739788451

Offset

1,1

Comments

Column 3 of A240327

Links

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

Example

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

Crossrefs

Sequence in context: A330535 A004140 A271612 * A335945 A360879 A206353

Adjacent sequences: A240320 A240321 A240322 * A240324 A240325 A240326

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved