Central terms of A355360; a(n) = A355360(2*n,n).

A355365

Central terms of A355360; a(n) = A355360(2*n,n).

Terms

    a(0) =1a(1) =3a(2) =54a(3) =1360a(4) =41405a(5) =1404102a(6) =51126740a(7) =1957600876a(8) =77812428681

External references