Numbers k such that the average number of odd divisors of {1..k} is an integer.
A339009
Numbers k such that the average number of odd divisors of {1..k} is an integer.
Terms
- a(0) =1a(1) =2a(2) =165a(3) =170a(4) =1274a(5) =9437a(6) =69720a(7) =69732a(8) =69734a(9) =69736a(10) =515230a(11) =515236a(12) =515246a(13) =28132043a(14) =28132063a(15) =28132079
External references
- oeis: A339009