Number of Motzkin trees that are "typable closable skeletons".
A300128
Number of Motzkin trees that are "typable closable skeletons".
Terms
- a(0) =0a(1) =1a(2) =1a(3) =1a(4) =5a(5) =9a(6) =17a(7) =55a(8) =122a(9) =289a(10) =828a(11) =2037a(12) =5239a(13) =14578a(14) =37942a(15) =101307a(16) =281041a(17) =755726a(18) =2062288
External references
- oeis: A300128