7-automorphic numbers ending in 8: final digits of 7n^2 agree with n.

A030992

7-automorphic numbers ending in 8: final digits of 7n^2 agree with n.

Terms

    a(0) =8a(1) =68a(2) =768a(3) =2768a(4) =72768a(5) =872768a(6) =3872768a(7) =83872768a(8) =683872768a(9) =1683872768a(10) =11683872768a(11) =11683872768a(12) =11683872768

External references