A239421 Number of nX3 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest, modulo 4

14, 80, 684, 4740, 34728, 247942, 1823840, 13104784, 96061078, 695765782, 5083225762, 36951321980, 269612837546, 1962752200756, 14312766262898, 104262967785574, 760091929311648, 5538575467521760, 40371718771292856

Offset

1,1

Comments

Column 3 of A239424

Links

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

Example

Some solutions for n=5
..2..3..3....1..2..2....2..3..3....2..3..3....1..3..1....1..2..1....1..2..2
..3..0..2....2..0..0....1..0..2....3..0..1....3..2..0....3..0..0....2..3..0
..2..1..0....2..0..0....1..0..3....3..1..3....3..2..2....2..1..2....2..0..3
..1..3..2....2..3..3....1..0..2....2..1..1....1..2..0....3..1..2....2..3..0
..3..2..2....2..0..3....3..2..0....1..3..2....3..0..0....3..2..2....2..3..3

Crossrefs

Sequence in context: A138401 A099360 A329820 * A309338 A215472 A209942

Adjacent sequences: A239418 A239419 A239420 * A239422 A239423 A239424

Keyword

nonn

Author

R. H. Hardin, Mar 17 2014

Status

approved