Sum of the Strahler numbers of all full binary trees with n internal vertices.
A127152
Sum of the Strahler numbers of all full binary trees with n internal vertices.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =68a(5) =232a(6) =795a(7) =2746a(8) =9586a(9) =33860a(10) =121014a(11) =437252a(12) =1595324a(13) =5869528a(14) =21748408a(15) =81060688a(16) =303606864a(17) =1141733024a(18) =4307943856a(19) =16300004128a(20) =61819681632a(21) =234929133504a(22) =894335405016
External references
- oeis: A127152