A350020 Number of species containing semisymmetric Latin squares of order n.

1, 1, 1, 2, 2, 7, 28, 366, 13899, 1968997, 934327507

Offset

1,4

Comments

Species (also called "main classes") are the largest natural equivalence classes of Latin squares.

Links

Table of n, a(n) for n=1..11.

Brendan D. McKay and Ian M. Wanless, Enumeration of Latin squares with conjugate symmetry, J. Combin. Des. 30 (2022), 105-130.

Crossrefs

Cf. A076016, A076017, A350019.

Sequence in context: A221648 A138802 A292016 * A359582 A047003 A067352

Adjacent sequences: A350017 A350018 A350019 * A350021 A350022 A350023

Keyword

nonn

Author

Ian Wanless, Dec 08 2021

Status

approved