A239996 Number of n X 3 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, 1389102990940616855, 12409927401794044619

Offset

1,1

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

Column 3 of A240000.

Sequence in context: A221382 A215791 A175913 * A383597 A064063 A171991

Adjacent sequences: A239993 A239994 A239995 * A239997 A239998 A239999

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved