Quotients arising from sequence A053317.

Terms

a(0) =1a(1) =13a(2) =69a(3) =347a(4) =1736a(5) =3993a(6) =41059a(7) =215842a(8) =498546a(9) =2202398a(10) =10866824a(11) =54261537a(12) =637482331a(13) =3370498978a(14) =7788765114a(15) =34411960682a(16) =169793870966a(17) =847836388608