A133176 Isotopy classes of unordered Latin bi-trades of size n.
0, 0, 0, 1, 0, 3, 1, 13, 7, 59, 70, 553, 1277, 7661, 32395, 199205, 1149306, 7752187, 53913897
Offset: 1
Links
- I. M. Wanless, A computer enumeration of small latin trades, Australas. J. Combin. 39, (2007) 247-258.
Crossrefs
Cf. A007083.