Number of elements in wreath product C_2 wr S_n that alternate up/not-up with respect to a weak product ordering.
A153741
Number of elements in wreath product C_2 wr S_n that alternate up/not-up with respect to a weak product ordering.
Terms
- a(0) =2a(1) =3a(2) =14a(3) =49a(4) =376a(5) =1987a(6) =21328a(7) =150337a(8) =2074624a(9) =18279971a(10) =308317184a(11) =3259985969a(12) =64981320704a(13) =801591982115
External references
- oeis: A153741