A239861 Number of 4Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero 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

6, 4, 84, 203, 1114, 3463, 9963, 71695, 219708, 889871, 4682227, 14101348, 56490669, 272270300, 908846318, 3737847138, 17250775307, 59577644920, 244962530289, 1088932223860, 3891762853661, 15991497390003, 68807314247286

Offset

1,1

Comments

Row 4 of A239858

Links

R. H. Hardin, Table of n, a(n) for n = 1..151

Example

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

Crossrefs

Sequence in context: A192350 A308900 A354949 * A266850 A109873 A334806

Adjacent sequences: A239858 A239859 A239860 * A239862 A239863 A239864

Keyword

nonn

Author

R. H. Hardin, Mar 28 2014

Status

approved