Number of hopping sequences in four-colored rooted trees with n nodes, starting and ending with the same "initial state" from all of the (two-colored) rooted trees in A198760. See comments.
A198761
Number of hopping sequences in four-colored rooted trees with n nodes, starting and ending with the same "initial state" from all of the (two-colored) rooted trees in A198760. See comments.
Terms
- a(0) =2a(1) =20a(2) =648a(3) =45472a(4) =5644880a(5) =1099056000a(6) =310007943616
External references
- oeis: A198761