Number of homeomorphically irreducible leaf colored trees with n leaves using exactly 3 colors.
A339786
Number of homeomorphically irreducible leaf colored trees with n leaves using exactly 3 colors.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =9a(4) =63a(5) =412a(6) =2673a(7) =17571a(8) =117365a(9) =798819a(10) =5530122a(11) =38908380a(12) =277750749a(13) =2009160864a(14) =14707923021a(15) =108835512411a(16) =813241695330
External references
- oeis: A339786