A023381 a(n+1) = a(n) converted to base 8 from base 5 (written in base 10).

5, 8, 11, 17, 26, 65, 152, 578, 2243, 13595, 136928, 2998403, 174466115, 28477359896, 19337050327073, 144515706183103139, 10653202726476848136212, 21365388661232868517558200530, 2895720987277797407056788297006319688