A241355 Number of nX7 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

20, 103, 641, 5663, 32942, 247664, 1904754, 12340892, 104529676, 729080777, 5436001228, 44321599723

Offset

1,1

Comments

Column 7 of A241356

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A077757 A126859 A071334 * A220207 A189950 A045768

Adjacent sequences: A241352 A241353 A241354 * A241356 A241357 A241358

Keyword

nonn

Author

R. H. Hardin, Apr 20 2014

Status

approved