A239822 Number of 4Xn 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, modulo 4

25, 582, 17552, 510748, 14544801, 418324402, 12059066460, 347095468871, 9991360194005, 287711413471266, 8284928413145004, 238566125657445992, 6869701227384114007, 197820645386511819554, 5696463550662058123697

Offset

1,1

Comments

Row 4 of A239819

Links

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

Example

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

Crossrefs

Sequence in context: A015679 A230454 A014909 * A264220 A228827 A159661

Adjacent sequences: A239819 A239820 A239821 * A239823 A239824 A239825

Keyword

nonn

Author

R. H. Hardin, Mar 27 2014

Status

approved