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A137058 Numbers n such that n and the square of n use only the digits 1, 4, 7, 8 and 9. 1
1, 7, 9, 88, 141, 441, 1191, 4141, 4471, 8878, 8941, 9191, 84779, 87988, 94191, 97441, 99471, 118817, 414417, 847891, 974417, 989891, 994479, 4179891, 4181488, 4181971, 9171417, 9187917, 9191191, 9478817, 9974417, 9974878, 11914191, 44718988, 84778817, 84784891, 91911478, 91919471, 94419141, 99447417, 848418988, 884188878 (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..205

J. Wellons, Tables of Shared Digits

EXAMPLE

894141979747891^2 = 799489879947477919191918947881

CROSSREFS

Sequence in context: A178427 A285011 A317401 * A116237 A123746 A152551

Adjacent sequences:  A137055 A137056 A137057 * A137059 A137060 A137061

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified August 12 17:17 EDT 2020. Contains 336439 sequences. (Running on oeis4.)