OFFSET
0,3
COMMENTS
Two permutations x,y on [n] commute if x*y = y*x.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..50
Tad White, Counting Free Abelian Actions, arXiv preprint arXiv:1304.2830 [math.CO], 2013.
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, May 08 2023
STATUS
approved