A249295 Number of length 5+3 0..n arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth.

162, 2792, 22572, 173368, 774542, 2863158, 8930228, 24208540, 58678014, 131166548, 271342248, 530208888, 984847110, 1749649576, 2991055892, 4952207778, 7952016454, 12442258472, 19016036460, 28452979568, 41758209826

Offset

1,1

Comments

Row 5 of A249290.

Links

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

Example

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

Crossrefs

Cf. A249290.

Sequence in context: A302532 A288489 A303413 * A221871 A245955 A128803

Adjacent sequences: A249292 A249293 A249294 * A249296 A249297 A249298

Keyword

nonn

Author

R. H. Hardin, Oct 24 2014

Status

approved