a(1) = 1, a(n+1) = numerator of the continued fraction [1; 2, 4, 8, ..., 2^n].

A061377

a(1) = 1, a(n+1) = numerator of the continued fraction [1; 2, 4, 8, ..., 2^n].

Terms

    a(0) =1a(1) =3a(2) =13a(3) =107a(4) =1725a(5) =55307a(6) =3541373a(7) =453351051a(8) =116061410429

External references