Number of unlabeled connected bicolored graphs on 2n nodes which are invariant when the two color classes are interchanged.
A123549
Number of unlabeled connected bicolored graphs on 2n nodes which are invariant when the two color classes are interchanged.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =36a(5) =265a(6) =3039a(7) =56532a(8) =1795771a(9) =100752242a(10) =10189358360
External references
- oeis: A123549