A240006 Number of 7Xn 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

368, 22592, 685898, 18392485, 429788876, 9314138750, 182333502325, 3306340714115, 55641031584148, 875242526758630

Offset

1,1

Comments

Row 7 of A240000

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A252222 A173055 A318938 * A097501 A239411 A239339

Adjacent sequences: A240003 A240004 A240005 * A240007 A240008 A240009

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved