A011979 Covering numbers C(n,4,3) (next term is <= 261).

1, 4, 6, 12, 14, 25, 30, 47, 57, 78, 91, 124, 140, 183, 207

Offset: 4

Author

N. J. A. Sloane

Keywords

• nonn
• hard

References

• CRC Handbook of Combinatorial Designs, 1996, p. 262.

Links

• D. Gordon, La Jolla Repository of Coverings
• K. J. Nurmela and Patric R. J. Östergård, New coverings of t-sets with (t+1)-sets, J. Combinat. Designs, 7 (1999), 217-226.
• K. J. Nurmela and Patric R. J. Östergård, New coverings of t-sets with (t+1)-sets (appendix), J. Combinat. Designs, 7 (1999), 217-226.
• Index entries for covering numbers

Crossrefs

A column of A066010.