A053912 Numbers k such that k^2 contains only digits {1,7,8}.

1, 9, 109, 280859, 105769141, 279067891

Offset

1,2

Links

Table of n, a(n) for n=1..6.

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Crossrefs

Cf. A053913.

Sequence in context: A261502 A359731 A105974 * A053894 A053904 A058607

Adjacent sequences: A053909 A053910 A053911 * A053913 A053914 A053915

Keyword

nonn,base,more

Author

Patrick De Geest, Mar 15 2000

Status

approved