A249261 Number of length 6+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, 678228, 2808885, 8984618, 24611755, 56750678, 122018031, 231977010, 516600553, 1008739178, 1888146937, 3233478724, 5370329949, 8379543498, 12801884207, 20101322572, 30981729383, 45635449254

Offset

1,1

Comments

Row 6 of A249255

Links

Table of n, a(n) for n=1..23.

Example

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

Crossrefs

Sequence in context: A249258 A249259 A249260 * A249262 A249172 A249173

Adjacent sequences: A249258 A249259 A249260 * A249262 A249263 A249264

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved