A249258 Number of length 3+6 0..n arrays with every seven consecutive terms having five times the sum of some two elements equal to two times the sum of the remaining five

2, 395, 2048, 10673, 37442, 108563, 393882, 1140003, 2763524, 6079977, 11916130, 22210135, 38245710, 69790045, 117575504, 192194985, 296733696, 448600639, 650294632, 929076457, 1333117720, 1887163485, 2588378000, 3513900317

Offset

1,1

Comments

Row 3 of A249255

Links

R. H. Hardin, Table of n, a(n) for n = 1..30

Example

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

Crossrefs

Sequence in context: A249366 A249256 A249257 * A249259 A249260 A249261

Adjacent sequences: A249255 A249256 A249257 * A249259 A249260 A249261

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved