A023377 a(n+1) = a(n) converted to base 9 from base 4 (written in base 10).

4, 9, 19, 84, 819, 19929, 4968964, 32299934229, 22650860119442104, 64622859204336398690105709, 37417737354038427535937949715303251763909, 10839565003114573305286763426362520300989660289144540301999534964