OFFSET
1,2
COMMENTS
Each participant ranks all participants other than themselves in strict order, giving (2n-1)! orderings for each of 2n participants.
LINKS
FORMULA
a(n) = (2n-1)!^(2n).
MATHEMATICA
Table[(2n-1)!^(2n), {n, 1, 6}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Dan Eilers, Nov 24 2022
STATUS
approved