A137057 Numbers k such that k and k^2 use only the digits 1, 4, 7 and 8.

1, 88, 4141, 8878

Offset

1,2

Comments

Generated with DrScheme.

Links

Table of n, a(n) for n=1..4.

Jonathan Wellons, Tables of Shared Digits [archived]

Example

4141^2 = 17147881.

Crossrefs

Sequence in context: A035739 A035807 A017751 * A197321 A004391 A281985

Adjacent sequences: A137054 A137055 A137056 * A137058 A137059 A137060

Keyword

base,nonn,more

Author

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

Status

approved