A239996 Number of nX3 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

4, 25, 190, 1372, 10405, 83029, 685898, 5825700, 50417154, 441675344, 3899065908, 34583504110, 307633283500, 2741312316323, 24453522555996, 218272506712305, 1949041652201113, 17407703510071602, 155496451538874916

Offset

1,1

Comments

Column 3 of A240000

Links

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

Example

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

Crossrefs

Sequence in context: A221382 A215791 A175913 * A064063 A171991 A380678

Adjacent sequences: A239993 A239994 A239995 * A239997 A239998 A239999

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved