A239601 Number of 3 X n 0..3 arrays with no element equal to zero 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.

4, 4, 31, 187, 1310, 9806, 76769, 611126, 4929897, 39990616, 325367130, 2651480323, 21625911002, 176464323565, 1440276473432, 11756877845964, 95977420564389, 783542978550992, 6396841387070227, 52224370266137630, 426366892135459667

Offset

1,1

Comments

Row 3 of A239599.

Links

R. H. Hardin, Table of n, a(n) for n = 1..75

Example

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

Crossrefs

Cf. A239599.

Sequence in context: A307499 A111723 A337447 * A196131 A256691 A120030

Adjacent sequences: A239598 A239599 A239600 * A239602 A239603 A239604

Keyword

nonn

Author

R. H. Hardin, Mar 22 2014

Status

approved