Number of labeled rooted trees of height 2 with n nodes.
A000551
Number of labeled rooted trees of height 2 with n nodes.
Terms
- a(0) =6a(1) =36a(2) =200a(3) =1170a(4) =7392a(5) =50568a(6) =372528a(7) =2936070a(8) =24617120a(9) =218521116a(10) =2045278248a(11) =20112821274a(12) =207162957120
External references
- oeis: A000551