A249235 Number of length 2+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four

62, 972, 7736, 36880, 133270, 400152, 1044612, 2427636, 5229990, 10451840, 19688932, 35362972, 60808746, 100653400, 161543020, 251735652, 382345122, 567979396, 826454760, 1180193960, 1658004122, 2293344492, 3127714936

Offset

1,1

Comments

Row 2 of A249233

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

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

Crossrefs

Sequence in context: A138408 A234482 A157499 * A250564 A231027 A103428

Adjacent sequences: A249232 A249233 A249234 * A249236 A249237 A249238

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved