A092329 Number of nonisomorphic, constructed lattice-square designs of order n as n runs through the odd prime-powers (3, 5, 7, 9, 11, 13, ...).

1, 2, 4, 9, 31, 128

Offset

3,2

Comments

Equivalence classes of designs are challenging. Here the difficulty is reduced by focusing on constructed designs.

References

W. Y.-C. Chen and D. C. Torney, Equivalence Classes of Matchings and Lattice-Square Designs, Discrete Applied Math, in press.

Links

Table of n, a(n) for n=3..8.

William Y.-C. Chen and David C. Torney, Equivalence Classes of Matchings and Lattice-Square Designs, Discr. Appl. Math. vol. 145 no. 3 (2005) pp 349-357.

Crossrefs

Sequence in context: A306505 A243789 A214935 * A053548 A054119 A259490

Adjacent sequences: A092326 A092327 A092328 * A092330 A092331 A092332

Keyword

nonn,uned,obsc

Author

David C. Torney (dtorney(AT)earthlink.com), Mar 17 2004

Extensions

What does "constructed" mean? If, as I suspect, it means constructed as of Mar 17 2004, then this is a time-dependent sequence and does not belong in the OEIS. - N. J. A. Sloane, Mar 18 2004

Status

approved