A133169 Transposition classes of Latin trades of size n.

0, 0, 0, 1, 0, 2, 1, 9, 7, 40, 63, 401, 1202, 6503, 31505, 187643, 1137602, 7617639, 53688610

Offset

1,6

Links

Table of n, a(n) for n=1..19.

I. M. Wanless, A computer enumeration of small latin trades, Australas. J. Combin. 39, (2007) 247-258.

Crossrefs

Cf. A007083.

Sequence in context: A016632 A176400 A021459 * A133175 A188659 A042977

Adjacent sequences: A133166 A133167 A133168 * A133170 A133171 A133172

Keyword

nonn,more

Author

Ian Wanless, Oct 11 2007

Status

approved