A239248 Number of n X n 0..4 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it, modulo 5

4, 142, 47066, 160787652, 5651220281864, 2031453416998054930, 7475436982938232742147042, 281737508349215799258494615824100

Offset

1,1

Comments

Diagonal of A239256

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A293752 A299833 A231949 * A225133 A122422 A307703

Adjacent sequences: A239245 A239246 A239247 * A239249 A239250 A239251

Keyword

nonn

Author

R. H. Hardin, Mar 13 2014

Status

approved