A247538 Number of length 6+3 0..n arrays with some disjoint pairs in every consecutive four terms having the same sum.

8, 153, 1018, 3455, 8440, 16683, 29012, 47061, 70374, 101211, 139098, 186709, 242550, 310309, 387886, 479071, 581190, 700039, 831330, 980163, 1143696, 1326791, 1525156, 1747277, 1985126, 2246569, 2527836, 2835111, 3161492, 3517493, 3893824

Offset: 1

Author

R. H. Hardin, Sep 18 2014

Keywords

• nonn

Comments

Row 6 of A247533

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 92

Formula

Empirical recurrence of order 92 (see link above)