A137083 Numbers k such that k and k^2 use only the digits 2, 3, 5, 7 and 8.

5, 85, 235, 885, 2885, 7585, 22885, 27885, 72335, 73385, 75885, 87885, 287885, 522335, 572585, 723385, 723585, 733385, 852835, 2352835, 2752885, 2885885, 5222335, 5222885, 5223335, 5232385, 5327835, 5772585, 5777835, 7272385, 7333385, 8852885, 23575885, 28858835, 53223335, 73333385, 85752885, 88787885, 275378335, 278527885

Offset

1,1

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..183

J. Wellons, Tables of Shared Digits [archived]

Example

723728372752885^2 = 523782757527538855273275823225.

Crossrefs

Sequence in context: A367192 A048143 A216420 * A198586 A121290 A201797

Adjacent sequences: A137080 A137081 A137082 * A137084 A137085 A137086

Keyword

base,nonn

Author

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

Status

approved