A136930 Numbers k such that k and k^2 use only the digits 0, 3, 4, 6 and 7.

0, 6, 60, 600, 6000, 60000, 66076, 600000, 660760, 6000000, 6607600, 60000000, 60003706, 60036706, 66036076, 66066376, 66076000, 600000000, 600037060, 600306344, 600367060, 600373006, 606336074, 660360760, 660663760, 660760000, 660760474, 6000000000, 6000036706, 6000370600, 6000637006, 6003063440, 6003670600, 6003730060

Offset

1,2

Comments

Generated with DrScheme.

See also A058429-A058430. - M. F. Hasler, Jan 24 2008

Links

Jonathan Wellons, Table of n, a(n) for n = 1..181

J. Wellons, Tables of Shared Digits [archived]

Example

660760703770306^2 = 436604707647030077763607333636.

Crossrefs

Sequence in context: A136943 A179200 A136938 * A136936 A136893 A090019

Adjacent sequences: A136927 A136928 A136929 * A136931 A136932 A136933

Keyword

base,nonn

Author

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

Status

approved