a(n) = A375516(n+1) / A375516(n).A375791a(n) = A375516(n+1) / A375516(n).Terms a(0) =2a(1) =2a(2) =3a(3) =4a(4) =25a(5) =201a(6) =40201a(7) =1212060151External referencesoeis: A375791