A248542 Number of length 5+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth

2, 15, 52, 149, 462, 907, 2000, 3827, 6566, 9607, 13716, 19361, 26626, 35005, 45144, 57553, 72370, 89055, 108244, 130139, 155466, 183111, 214128, 250561, 289902, 332521, 379740, 431741, 487886, 547037, 610576, 680137, 755678, 835739, 919484

Offset

1,1

Comments

Row 5 of A248537

Links

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

Example

Some solutions for n=6
..3....4....2....4....6....0....5....1....3....0....6....3....6....3....1....4
..2....3....4....6....1....2....4....6....5....6....2....4....3....0....6....1
..5....3....1....2....3....3....6....3....4....0....1....3....4....3....3....1
..2....6....1....4....2....3....5....2....4....2....3....2....3....2....2....2
..3....4....2....4....2....4....1....1....3....0....2....3....6....3....1....0
..2....3....0....6....1....6....4....2....5....6....2....4....3....4....2....5
..1....3....1....2....3....3....6....3....4....0....1....3....0....3....3....1
..2....6....5....4....6....3....5....6....0....2....3....6....3....2....2....2

Crossrefs

Sequence in context: A248540 A007972 A248541 * A248543 A248544 A344819

Adjacent sequences: A248539 A248540 A248541 * A248543 A248544 A248545

Keyword

nonn

Author

R. H. Hardin, Oct 08 2014

Status

approved