7-automorphic numbers ending in 5: final digits of 7n^2 agree with n.

A030991

7-automorphic numbers ending in 5: final digits of 7n^2 agree with n.

Terms

    a(0) =5a(1) =75a(2) =375a(3) =4375a(4) =84375a(5) =984375a(6) =8984375a(7) =58984375a(8) =458984375a(9) =5458984375a(10) =45458984375a(11) =845458984375

External references