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A137053 Numbers k such that k and k^2 use only the digits 1, 4, 6, 7 and 9. 1
1, 4, 7, 14, 69, 119, 4119, 4446, 4469, 6479, 41469, 44469, 69114, 641619, 679479, 4116974, 4176974, 4179676, 4411479, 6416969, 6477974, 6646614, 6646764, 6691771, 6794446, 9719114, 41766969, 41794676, 41799479, 64169446, 66464119, 66679676, 67949796, 97466771, 99747176, 414476974, 441491469, 447179119, 679679676, 997496614 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..143

J. Wellons, Tables of Shared Digits

EXAMPLE

647416146496719^2 = 419147666744661117496677764961.

CROSSREFS

Sequence in context: A076586 A240266 A064961 * A214328 A310921 A310922

Adjacent sequences:  A137050 A137051 A137052 * A137054 A137055 A137056

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified August 8 10:04 EDT 2022. Contains 356009 sequences. (Running on oeis4.)