Number of increasing rooted trees with a forbidden limb of length 3.
A052324
Number of increasing rooted trees with a forbidden limb of length 3.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =19a(6) =90a(7) =520a(8) =3475a(9) =26550a(10) =228050a(11) =2177020a(12) =22860090a(13) =261870070a(14) =3249793360a(15) =43432062300a(16) =621911561150
External references
- oeis: A052324