The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #12 Aug 20 2019 00:50:59
%S 1,1,2,5,13,35,135,613,3624,25230,203640,1842350,18535683,204650313
%N Number of orbits of Sym(n)^2 where Sym(n) acts by conjugation such that both permutations in a representative pair have the same cycle type.
%H Amit Harlev, Charles R. Johnson, and Derek Lim, <a href="https://arxiv.org/abs/1908.03647">The Doubly Stochastic Single Eigenvalue Problem: A Computational Approach</a>, arXiv:1908.03647 [math.SP], 2019.
%e For n = 2, representatives of the a(2) = 2 orbits are: (e,e), ((12), (12)), where e is identity.
%Y Cf. A110143, A327015.
%K nonn,more
%O 0,3
%A _Derek Lim_, Aug 13 2019