Number of twin-tree-rooted maps with n edges.
A260041
Number of twin-tree-rooted maps with n edges.
Terms
- a(0) =0a(1) =1a(2) =9a(3) =88a(4) =935a(5) =10576a(6) =125398a(7) =1541842a(8) =19510569a(9) =252692488a(10) =3336041258a(11) =44754332228a(12) =608627917092
External references
- oeis: A260041