A239984 Number of nX6 0..3 arrays with no element equal to zero 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

1, 7, 65, 1495, 31226, 652346, 16721012, 381369904, 9009351655, 233083355837, 5373732732783, 130821770741989, 3240495708022575, 75383547521530003, 1859081645190913254, 44959584675029390497, 1062939483571455261657

Offset

1,2

Comments

Column 6 of A239986

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

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

Crossrefs

Sequence in context: A272646 A220067 A109779 * A274822 A179880 A297310

Adjacent sequences: A239981 A239982 A239983 * A239985 A239986 A239987

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved