A240399 Number of 7Xn 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 two plus the sum of the elements diagonally to its northwest, modulo 4

8, 1184, 48826, 1314136, 27938412, 502139307, 8505203924, 129986039476, 1866231371425, 25064986328911, 321447302724210, 3937428233396558, 46182406835583776, 518522310991918951, 5587970755536084736

Offset

1,1

Comments

Row 7 of A240394

Links

R. H. Hardin, Table of n, a(n) for n = 1..26

Example

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

Crossrefs

Sequence in context: A201985 A301614 A180767 * A160008 A251699 A162139

Adjacent sequences: A240396 A240397 A240398 * A240400 A240401 A240402

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved