A249257 Number of length 2+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, 326788, 834875, 1849962, 3798009, 7085676, 12662655, 21180474, 36068329, 57764888, 90289349, 134865410, 197997863, 280852856, 393449209, 547109446, 752377935, 1008548684, 1340579835

Offset

1,1

Comments

Row 2 of A249255

Links

R. H. Hardin, Table of n, a(n) for n = 1..36

Example

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

Crossrefs

Sequence in context: A249365 A249366 A249256 * A249258 A249259 A249260

Adjacent sequences: A249254 A249255 A249256 * A249258 A249259 A249260

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved