Bisection of A003319: a(n) = A003319(2n+1).

A272657

Bisection of A003319: a(n) = A003319(2n+1).

Terms

    a(0) =1a(1) =3a(2) =71a(3) =3447a(4) =273343a(5) =31998903a(6) =5201061455

External references