A247930 Number of length 3+4 0..n arrays with some disjoint pairs in every consecutive five terms having the same sum

128, 1387, 9248, 38753, 118416, 298267, 663080, 1325773, 2465828, 4259939, 6992604, 10953817, 16546088, 24138007, 34297436, 47561717, 64624896, 86117179, 112957460, 146057797, 186370556, 235008095, 293220048, 362275861, 443688080

Offset

1,1

Comments

Row 3 of A247927

Links

R. H. Hardin, Table of n, a(n) for n = 1..83

Example

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

Crossrefs

Sequence in context: A181211 A221071 A070055 * A200842 A187706 A202961

Adjacent sequences: A247927 A247928 A247929 * A247931 A247932 A247933

Keyword

nonn

Author

R. H. Hardin, Sep 26 2014

Status

approved