A240360 Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4

8, 51, 257, 1181, 4825, 18307, 64013, 209366, 645067, 1889163, 5290881, 14255341, 37123088, 93794323, 230612423, 553103591, 1296531617, 2974976604, 6690386564, 14761551146, 31981485566, 68087935696, 142536873665, 293578073240

Offset

1,1

Comments

Column 3 of A240364

Links

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

R. H. Hardin, Empirical polynomial of degree 26

Formula

Empirical polynomial of degree 26 (see link above)

Example

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

Crossrefs

Sequence in context: A000851 A054620 A034516 * A069325 A295348 A082135

Adjacent sequences: A240357 A240358 A240359 * A240361 A240362 A240363

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved