A249089 Number of length 4+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, 4136, 27213, 108018, 454487, 1365188, 3374725, 8157330, 17098293, 32231592, 59778995, 102570498, 165348629, 263953640, 401180967, 586241418, 850471689, 1195787840, 1634832071, 2224059510, 2958717373, 3859429656

Offset

1,1

Comments

Row 4 of A249085

Links

R. H. Hardin, Table of n, a(n) for n = 1..39

Example

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

Crossrefs

Sequence in context: A249087 A348707 A249088 * A249090 A249091 A041930

Adjacent sequences: A249086 A249087 A249088 * A249090 A249091 A249092

Keyword

nonn

Author

R. H. Hardin, Oct 20 2014

Status

approved