A023382 a(n+1) = a(n) converted to base 9 from base 5 (written in base 10).

5, 9, 13, 21, 37, 101, 325, 1701, 15553, 265521, 15145741, 4407319297, 8476862457125, 317357347477745133, 729744078980232421278033, 312985160558462528575346809331697