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A137008 Numbers k such that k and k^2 use only the digits 1, 2, 5, 7 and 8. 1
1, 5, 11, 15, 85, 285, 715, 1585, 2285, 8711, 28511, 52515, 52715, 72285, 151285, 228511, 285515, 722211, 852715, 878511, 2858711, 2878511, 7182285, 7182515, 7271285, 8785711, 8877811, 8881585, 15878511, 28551285, 71782715, 75582585, 111887511, 125585515, 277881585, 278852515, 287275515, 727157285, 758785711, 882185515, 887285515 (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..158

J. Wellons, Tables of Shared Digits

EXAMPLE

275182172182585^2 = 75725227887125857782577282225.

CROSSREFS

Sequence in context: A136973 A276037 A221743 * A137010 A137007 A137012

Adjacent sequences:  A137005 A137006 A137007 * A137009 A137010 A137011

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified October 23 04:06 EDT 2021. Contains 348211 sequences. (Running on oeis4.)