A136918 Numbers k such that k and k^2 use only the digits 0, 2, 5 and 8.

0, 5, 50, 500, 505, 2255, 5000, 5005, 5050, 22550, 50000, 50005, 50050, 50500, 50555, 225500, 225505, 500000, 500005, 500050, 500500, 500505, 505000, 505550, 505555, 508805, 2255000, 2255050, 5000000, 5000005, 5000050, 5000500, 5000505, 5002255, 5005000, 5005050, 5005555, 5050000, 5050005, 5052255, 5055500, 5055550, 5088050, 22550000

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..860

J. Wellons, Tables of Shared Digits [archived]

Example

505000500500005^2 = 255025505505255550255005000025.

Crossrefs

Sequence in context: A228751 A299868 A136915 * A136910 A267663 A093143

Adjacent sequences: A136915 A136916 A136917 * A136919 A136920 A136921

Keyword

base,nonn

Author

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

Status

approved