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A137075 Numbers n such that n and the square of n use only the digits 2, 3, 4, 7 and 9. 1
2, 3, 7, 27, 223, 473, 4943, 49777, 222327, 273393, 477277, 499423, 499473, 973393, 2733943, 4932923, 4993443, 4994777, 4997927, 49342927, 49924277, 49972927, 49993443, 49994223, 49994777, 97339223, 492942927, 494342927, 497332327, 497794473, 497993923, 499293443, 499932923, 499947327, 499972927, 499979277, 499979327 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Generated with DrScheme

LINKS

Jonathan Wellons, Table of n, a(n) for n=1..200

J. Wellons, Tables of Shared Digits

EXAMPLE

497242372972927^2 = 247249977479747443472274947329

CROSSREFS

Sequence in context: A264829 A156142 A052877 * A270347 A060412 A276665

Adjacent sequences:  A137072 A137073 A137074 * A137076 A137077 A137078

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified September 24 22:31 EDT 2017. Contains 292441 sequences.