Terms appearing more than once in A309940, in ascending order.
A328257
Terms appearing more than once in A309940, in ascending order.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =173a(4) =193a(5) =391a(6) =3298a(7) =19750a(8) =46327a(9) =316829a(10) =393923a(11) =3613513a(12) =5727571a(13) =15140393a(14) =26528704a(15) =661899193
External references
- oeis: A328257