A239848 Number of nX6 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4

7, 109, 2221, 46260, 874352, 15039319, 232886648, 3315673203, 44101959522, 556619827523, 6695977596256, 76860374449526, 842768492337658, 8843612429559950, 89035572461799515, 862379702184879987

Offset

1,1

Comments

Column 6 of A239849

Links

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

Example

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

Crossrefs

Sequence in context: A123804 A333092 A274668 * A274787 A116875 A374882

Adjacent sequences: A239845 A239846 A239847 * A239849 A239850 A239851

Keyword

nonn

Author

R. H. Hardin, Mar 28 2014

Status

approved