Denominator of n-th convergent to e^(2/3).

Terms

a(0) =1a(1) =1a(2) =19a(3) =134a(4) =153a(5) =287a(6) =3023a(7) =163529a(8) =2619487a(9) =2783016a(10) =5402503a(11) =105430573a(12) =9494154073a(13) =237459282398a(14) =246953436471a(15) =484412718869