A133174 Transposition classes of unordered Latin bi-trades of size n.
0, 0, 0, 1, 0, 2, 1, 9, 5, 36, 42, 313, 685, 3999, 16535, 100897, 577324, 3886229, 26982310
Offset: 1
Links
- I. M. Wanless, A computer enumeration of small latin trades, Australas. J. Combin. 39, (2007) 247-258.
Crossrefs
Cf. A007083.