A247732 Number of length 6+3 0..n arrays with no disjoint pairs in any consecutive four terms having the same sum

8, 1300, 25822, 282384, 1859736, 9157806, 35577396, 117045466, 335633762, 866155104, 2043994578, 4486798554, 9251159426, 18098333074, 33805948534, 60683289878, 105129360118, 176544589660, 288258130350, 459035320810

Offset

1,1

Comments

Row 6 of A247726

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A340562 A176113 A091868 * A162090 A017187 A168575

Adjacent sequences: A247729 A247730 A247731 * A247733 A247734 A247735

Keyword

nonn

Author

R. H. Hardin, Sep 23 2014

Status

approved