Number of ways to paint some (possibly none or all) of the trees over all forests on n labeled nodes.
A218691
Number of ways to paint some (possibly none or all) of the trees over all forests on n labeled nodes.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =26a(4) =156a(5) =1242a(6) =12616a(7) =158034a(8) =2372880a(9) =41725106a(10) =843126624a(11) =19277549898a(12) =492447987136
External references
- oeis: A218691