Triangle read by rows: T(n,k) = number of increasing sequences of n positive integers with reciprocals adding up to k (k=1,2,...,A055980(n)).

A280520

Triangle read by rows: T(n,k) = number of increasing sequences of n positive integers with reciprocals adding up to k (k=1,2,...,A055980(n)).

Terms

    a(0) =1a(1) =0a(2) =1a(3) =6a(4) =1a(5) =72a(6) =6a(7) =2320a(8) =72a(9) =245765a(10) =2320a(11) =151182379a(12) =245765

External references