A240318 Number of nX4 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4

4, 44, 866, 8456, 143682, 1352558, 22643786, 211572262, 3529400774, 32917918872, 548537397570, 5113323731566, 85179503007364, 793890665659772, 13223569349792094, 123240154993160076, 2052706033729930926

Offset

1,1

Comments

Column 4 of A240321

Links

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

Example

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

Crossrefs

Sequence in context: A375872 A370058 A144004 * A227656 A206686 A302909

Adjacent sequences: A240315 A240316 A240317 * A240319 A240320 A240321

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved