A249294 Number of length 4+3 0..n arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth.

88, 1094, 6960, 40588, 150112, 469072, 1263044, 3011088, 6514660, 13131956, 24755440, 44396112, 76182120, 125764540, 200780652, 311698092, 471201156, 696406084, 1008398272, 1433424724, 2003585272, 2758886876, 3745643452

Offset

1,1

Comments

Row 4 of A249290.

Links

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

Example

Some solutions for n=5
..3....3....3....0....1....1....3....4....3....4....4....1....0....4....0....3
..5....1....2....3....0....0....0....2....5....4....4....1....1....1....1....4
..3....5....4....2....5....4....4....1....5....1....2....3....3....0....3....0
..5....5....5....1....4....0....4....0....1....1....1....1....3....5....2....0
..3....1....1....5....5....3....1....0....2....5....5....2....4....0....5....3
..5....5....4....1....5....3....0....1....3....4....4....1....1....2....4....4
..0....2....5....5....1....4....0....4....1....5....1....2....3....3....3....0

Crossrefs

Cf. A249290.

Sequence in context: A295591 A182676 A228744 * A239274 A235018 A228810

Adjacent sequences: A249291 A249292 A249293 * A249295 A249296 A249297

Keyword

nonn

Author

R. H. Hardin, Oct 24 2014

Status

approved