Numbers k such that k^2 contains only digits {1,8,9}.
A053914
Numbers k such that k^2 contains only digits {1,8,9}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =109a(4) =141a(5) =10583a(6) =34641a(7) =44510583a(8) =105741141a(9) =942926927083
External references
- oeis: A053914