A249260 Number of length 5+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, 567504, 2093337, 6100670, 15506047, 33790602, 69073383, 126818950, 264675031, 492530342, 881242457, 1457336916, 2343675015, 3564233298, 5318404897, 8109729696, 12154433653, 17479577394, 24792007427

Offset

1,1

Comments

Row 5 of A249255.

Links

Table of n, a(n) for n=1..24.

Example

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

Crossrefs

Cf. A249255.

Sequence in context: A249257 A249258 A249259 * A249261 A249262 A249172

Adjacent sequences: A249257 A249258 A249259 * A249261 A249262 A249263

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved