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A137140
Numbers k such that k and k^2 use only the digits 4, 5, 6, 7 and 8.
1
8, 74, 76, 88, 684, 758, 766, 888, 6684, 6766, 6888, 7588, 7666, 8874, 66684, 67666, 68474, 68888, 74476, 74758, 76476, 76478, 76666, 86478, 86878, 666684, 667666, 668474, 675684, 675758, 676666, 688888, 744758, 747574, 766458, 766476, 766666, 6666684, 6668474, 6675684, 6675758, 6676666, 6748678, 6766666, 6845784, 6888888, 7455766
OFFSET
1,1
COMMENTS
Generated with DrScheme.
LINKS
J. Wellons, Tables of Shared Digits [archived]
EXAMPLE
676584568657574^2 = 457766678545555465868467565476.
CROSSREFS
Sequence in context: A294809 A225161 A195754 * A187529 A282880 A190953
KEYWORD
base,nonn
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved