A350018 Number of unipotent commutative loops of order 2n.

1, 1, 1, 7, 3460, 6320290037, 15859695832489637513

Offset

1,4

Links

Table of n, a(n) for n=1..7.

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

Crossrefs

Cf. A089925, A350017.

Sequence in context: A218141 A172956 A236368 * A055307 A052496 A216935

Adjacent sequences: A350015 A350016 A350017 * A350019 A350020 A350021

Keyword

nonn,more

Author

Ian Wanless, Dec 08 2021

Status

approved