Composite numbers not divisible by 2 or 3 which in base 3 contain their largest proper factor as a substring.
A063132
Composite numbers not divisible by 2 or 3 which in base 3 contain their largest proper factor as a substring.
Terms
- a(0) =49a(1) =427a(2) =671a(3) =949a(4) =1387a(5) =1679a(6) =1849a(7) =2117a(8) =3397a(9) =3829a(10) =4307a(11) =6017a(12) =6169a(13) =7141a(14) =8299a(15) =10547a(16) =11773a(17) =13703a(18) =17161a(19) =17819a(20) =19517a(21) =24523a(22) =25019a(23) =25877a(24) =29941a(25) =30607a(26) =31459a(27) =33853a(28) =34447a(29) =34547
External references
- oeis: A063132