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A137071 Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 7. 1
2, 6, 26, 474, 4762, 272442, 273376, 2732632, 2764674, 27264326, 27337662, 47374332, 2724422442, 2724642442, 2763643326, 4727236262, 4737376662, 4737746644, 4772247662, 4772446262, 27247472662, 27326246426, 47246633344, 47362667432, 47377466632, 47673344474, 272463477632, 272623776426, 273363264674, 276337233762 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Generated with DrScheme.
LINKS
J. Wellons, Tables of Shared Digits [archived]
EXAMPLE
473737632374332^2 = 224427344327637734663772446224.
CROSSREFS
Sequence in context: A306147 A331937 A162438 * A255016 A331751 A034565
KEYWORD
base,nonn,changed
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved

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Last modified April 22 21:06 EDT 2024. Contains 371906 sequences. (Running on oeis4.)