A240791 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

7, 10, 19, 37, 85, 142, 386, 979, 1988, 5128, 10616, 25230, 58238, 125528, 302384, 670325, 1520808, 3524961, 7865967, 18151793, 41320633, 93575521, 215154289, 487353355, 1112746546, 2542170679, 5772347607, 13196888198, 30049864101

Offset

1,1

Comments

Column 4 of A240792

Links

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

Example

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

Crossrefs

Sequence in context: A196939 A038211 A122226 * A064210 A249942 A300021

Adjacent sequences: A240788 A240789 A240790 * A240792 A240793 A240794

Keyword

nonn

Author

R. H. Hardin, Apr 12 2014

Status

approved