A240158 Number of 6Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

15, 144, 825, 22412, 108201, 1608415, 12812998, 70360014, 694603093, 4788445889, 30873934965

Offset

1,1

Comments

Row 6 of A240153

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Sequence in context: A291619 A071700 A133126 * A255944 A243418 A270511

Adjacent sequences: A240155 A240156 A240157 * A240159 A240160 A240161

Keyword

nonn

Author

R. H. Hardin, Apr 02 2014

Status

approved