A249087 Number of length 2+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four

22, 243, 1944, 8805, 28366, 84067, 202628, 429069, 859390, 1571551, 2675332, 4423193, 6941954, 10445275, 15438956, 22078997, 30718938, 42223499, 56770760, 74848061, 97861362, 125898023, 159689464, 201241105, 250580166, 308596907

Offset

1,1

Comments

Row 2 of A249085

Links

R. H. Hardin, Table of n, a(n) for n = 1..70

Example

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

Crossrefs

Sequence in context: A249085 A249086 A300624 * A348707 A249088 A249089

Adjacent sequences: A249084 A249085 A249086 * A249088 A249089 A249090

Keyword

nonn

Author

R. H. Hardin, Oct 20 2014

Status

approved