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A137013 Numbers k such that k and k^2 use only the digits 1, 2, 6 and 7. 0
1, 11, 26, 276, 161761 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme.

LINKS

Table of n, a(n) for n=1..5.

J. Wellons, Tables of Shared Digits

EXAMPLE

161761^2 = 26166621121.

CROSSREFS

Sequence in context: A027521 A238147 A137014 * A014468 A156373 A029492

Adjacent sequences:  A137010 A137011 A137012 * A137014 A137015 A137016

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified September 22 02:48 EDT 2021. Contains 347605 sequences. (Running on oeis4.)