You type it into the >>Online Encyclopaedia of Integer Sequences<<.
Then you note that there is no unique solution to such questions. In fact the only correct answer is "What would you like it to be"
CB
You type it into the >>Online Encyclopaedia of Integer Sequences<<.
Then you note that there is no unique solution to such questions. In fact the only correct answer is "What would you like it to be"
CB
These numbers are closely related to the Catalan numbers. They satisfy the recurrence relation