A241051 Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4

4, 2, 3, 6, 6, 15, 31, 58, 170, 388, 677, 1821, 3533, 7379, 18106, 37073, 82436, 193696, 400749, 914323, 2049019, 4372160, 9966006, 21985585, 47864157, 108257464, 237088178, 522824937, 1171545248, 2567836513, 5698120668, 12680572718

Offset

1,1

Comments

Column 3 of A241054

Links

R. H. Hardin, Table of n, a(n) for n = 1..250

Example

All solutions for n=4
..3..3..2....3..3..2....3..3..2....3..3..2....3..3..2....3..3..2
..2..2..0....2..2..0....2..2..0....2..2..0....2..0..0....2..2..0
..3..3..0....3..3..0....2..0..0....3..3..0....2..0..0....3..3..0
..3..2..0....2..2..3....2..0..0....2..2..0....2..0..0....3..2..3

Crossrefs

Sequence in context: A361747 A282865 A377137 * A275590 A338844 A333406

Adjacent sequences: A241048 A241049 A241050 * A241052 A241053 A241054

Keyword

nonn

Author

R. H. Hardin, Apr 15 2014

Status

approved