A239853 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one 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, 9, 44, 84, 130, 343, 685, 1704, 3977, 7958, 18574, 40388, 86314, 203202, 433430, 967411, 2205109, 4735287, 10746065, 23937983, 52281965, 118605335, 261244402, 578751600, 1302168082, 2864205270, 6395152778, 14272351652, 31509181522

Offset

1,1

Comments

Column 3 of A239858

Links

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

Example

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

Crossrefs

Sequence in context: A093149 A048054 A284973 * A209079 A149170 A357447

Adjacent sequences: A239850 A239851 A239852 * A239854 A239855 A239856

Keyword

nonn

Author

R. H. Hardin, Mar 28 2014

Status

approved