The sequence lambda(n,n), where lambda is defined in A055203.

A058810

The sequence lambda(n,n), where lambda is defined in A055203.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =24a(4) =978a(5) =63540a(6) =6075900a(7) =805351680a(8) =141497266680

External references