A240188 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4

1, 8, 37, 138, 680, 2413, 10017, 43956, 159668, 681760, 2806434, 10675575, 45462460, 181764269, 715963401, 3000804172, 11895218236, 47847647772, 197325296591, 783759057127, 3182984036915, 12972975259195, 51820141213238

Offset

1,2

Comments

Column 3 of A240192

Links

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

Example

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

Crossrefs

Sequence in context: A053296 A055799 A035038 * A294372 A256412 A272731

Adjacent sequences: A240185 A240186 A240187 * A240189 A240190 A240191

Keyword

nonn

Author

R. H. Hardin, Apr 02 2014

Status

approved