a(n) is least k such that k and 7k are anagrams in base n (written in base 10).

Terms

a(0) =567a(1) =7188a(2) =1359a(3) =140a(4) =2574a(5) =244a(6) =778687a(7) =28a(8) =455a(9) =8136a(10) =8398a(11) =30a(12) =19950a(13) =24640a(14) =1183a(15) =33a(16) =828a(17) =868a(18) =925a(19) =1989a(20) =40977a(21) =35042a(22) =1421a(23) =40a(24) =41943a(25) =1408a(26) =4367a(27) =2186880a(28) =4830a(29) =62472