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A136824
Numbers k such that k and k^2 use only the digits 0, 1, 2, 5 and 7.
1
0, 1, 5, 10, 11, 15, 50, 100, 101, 105, 110, 150, 500, 501, 505, 711, 715, 755, 1000, 1001, 1005, 1010, 1011, 1050, 1100, 1101, 1105, 1255, 1500, 5000, 5001, 5005, 5010, 5011, 5015, 5050, 7110, 7150, 7251, 7550, 10000, 10001, 10005, 10010, 10011, 10050, 10100, 10105, 10110, 10500, 10501, 11000, 11001, 11005, 11010, 11050, 11205, 12550, 15000, 15005
OFFSET
1,3
COMMENTS
Generated with DrScheme.
LINKS
J. Wellons, Tables of Shared Digits [archived]
EXAMPLE
721257251^2 = 520212022120077001.
CROSSREFS
Sequence in context: A130228 A136826 A136825 * A136822 A189151 A120513
KEYWORD
base,nonn
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved