A240049 Number of 4Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4

6, 22, 93, 346, 1110, 5780, 17297, 57800, 202995, 643326, 2233216, 7442776, 25047361, 84213282, 278643460, 939079721, 3094143301, 10358660848, 34579518631, 114236046070, 383085583978, 1270523789559, 4220562761492

Offset

1,1

Comments

Row 4 of A240046

Links

R. H. Hardin, Table of n, a(n) for n = 1..166

Example

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

Crossrefs

Sequence in context: A255465 A289603 A349834 * A078418 A100300 A027296

Adjacent sequences: A240046 A240047 A240048 * A240050 A240051 A240052

Keyword

nonn

Author

R. H. Hardin, Mar 31 2014

Status

approved