6-idempotent numbers.

A050988

6-idempotent numbers.

Terms

    a(0) =1a(1) =42a(2) =1008a(3) =18144a(4) =272160a(5) =3592512a(6) =43110144a(7) =480370176a(8) =5043886848a(9) =50438868480a(10) =484213137408

External references