A249178 Number of length 7+6 0..n arrays with every seven consecutive terms having four times the sum of some three elements equal to three times the sum of the remaining four

2, 395, 2258, 11177, 39066, 115437, 954986, 5101909, 18786744, 56431603, 142215998, 319891307, 652627222, 1647080797, 3703318802, 7684619675, 14642811994

Offset

1,1

Comments

Row 7 of A249171

Links

Table of n, a(n) for n=1..17.

Example

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

Crossrefs

Sequence in context: A249175 A249176 A249177 * A375843 A281650 A324403

Adjacent sequences: A249175 A249176 A249177 * A249179 A249180 A249181

Keyword

nonn

Author

R. H. Hardin, Oct 22 2014

Status

approved