A013576 Minimal scope of an (n,4) difference triangle.

11, 22, 32, 41, 51, 60, 71, 80, 91, 100, 111, 120, 131, 140, 151

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• hard

References

• CRC Handbook of Combinatorial Designs, 1996, p. 315.

Links

• J. B. Shearer, Difference Triangle Sets: Known optimal solutions.
• J. B. Shearer, Difference Triangle Sets: Discoverers