Number of 4-tuples (p_1, p_2, ..., p_4) of Dyck paths of semilength n, such that each p_i is never below p_{i-1}.
A006150
Number of 4-tuples (p_1, p_2, ..., p_4) of Dyck paths of semilength n, such that each p_i is never below p_{i-1}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =55a(4) =1001a(5) =26026a(6) =884884a(7) =37119160a(8) =1844536720a(9) =105408179176
External references
- oeis: A006150