507173domain: NAppears in sequencesa(n) is least k such that k and 8k are anagrams in base n (written in base 10).at n=15A023100Number of Dyck paths of semilength n having exactly 3 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).at n=8A243415