Sum of the numbers N*(n) and N**(n) in A242974.

A243867

Sum of the numbers N*(n) and N**(n) in A242974.

Terms

    a(0) =1a(1) =7a(2) =97a(3) =1289a(4) =20611a(5) =365775a(6) =7813466a(7) =212149365

External references