Number of homeomorphically irreducible leaf colored trees with n leaves of 4 colors.
A339784
Number of homeomorphically irreducible leaf colored trees with n leaves of 4 colors.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =20a(4) =90a(5) =476a(6) =3034a(7) =21380a(8) =163670a(9) =1322960a(10) =11156014a(11) =97142260a(12) =868031736a(13) =7921646244a(14) =73577937258a(15) =693691932892
External references
- oeis: A339784