Third unsigned column of triangle A051380.

A051563

Third unsigned column of triangle A051380.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =30a(4) =659a(5) =13145a(6) =255424a(7) =4985316a(8) =99236556a(9) =2030997852a(10) =42924478536a(11) =938984014584

External references