A240458 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

16, 375, 7589, 143237, 2632690, 47636104, 854671234, 15259447330, 271656519692, 4827854253348, 85712180553955, 1520764060039331, 26972330503325401, 478273812124771069, 8479592950284098842, 150327053689019608051

Offset

1,1

Comments

Column 4 of A240460

Links

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

Example

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

Crossrefs

Sequence in context: A053105 A220576 A264186 * A240891 A241106 A027403

Adjacent sequences: A240455 A240456 A240457 * A240459 A240460 A240461

Keyword

nonn

Author

R. H. Hardin, Apr 05 2014

Status

approved