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A136930 Numbers k such that k and k^2 use only the digits 0, 3, 4, 6 and 7. 1
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 (list; graph; refs; listen; history; text; internal format)
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

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

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Last modified July 28 17:15 EDT 2021. Contains 346335 sequences. (Running on oeis4.)