A240005 Number of 6Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

156, 5012, 83029, 1225281, 15981219, 191691132, 2090236137, 20967693050, 195664738888, 1709973352188, 14072972956499, 109646306877457, 811882008990473, 5734156428747664, 38755892651094582, 251427858506122705

Offset

1,1

Comments

Row 6 of A240000

Links

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

Example

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

Crossrefs

Sequence in context: A263290 A275766 A023903 * A035838 A035824 A252778

Adjacent sequences: A240002 A240003 A240004 * A240006 A240007 A240008

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved