A136825 Numbers k such that k and k^2 use only the digits 0, 1, 2, 5 and 8.

0, 1, 5, 10, 11, 15, 50, 100, 101, 105, 110, 150, 151, 285, 500, 501, 505, 1000, 1001, 1005, 1010, 1011, 1050, 1100, 1101, 1105, 1500, 1510, 1585, 2255, 2285, 2850, 2851, 2855, 5000, 5001, 5005, 5010, 5011, 5015, 5050, 10000, 10001, 10005, 10010, 10011, 10050, 10100, 10105, 10110, 10500, 11000, 11001, 11005, 11010, 11050, 11205, 12255, 15000, 15005

Offset

1,3

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1064

J. Wellons, Tables of Shared Digits [archived]

Example

508018515^2 = 258082811582805225.

Mathematica

With[{c={0, 1, 2, 5, 8}}, Select[FromDigits/@Tuples[c, 5], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Oct 02 2021 *)

Crossrefs

Sequence in context: A136811 A130228 A136826 * A136824 A136822 A189151

Adjacent sequences: A136822 A136823 A136824 * A136826 A136827 A136828

Keyword

base,nonn

Author

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

Status

approved