Number of series-reduced rooted identity trees with n leaves spanning an initial interval of positive integers.
A316653
Number of series-reduced rooted identity trees with n leaves spanning an initial interval of positive integers.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =58a(4) =774a(5) =13171a(6) =272700a(7) =6655962a(8) =187172762a(9) =5959665653a(10) =211947272186
External references
- oeis: A316653