A137013 Numbers k such that k and k^2 use only the digits 1, 2, 6 and 7.

1, 11, 26, 276, 161761

Offset

1,2

Comments

Generated with DrScheme.

Links

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

Jonathan Wellons, Tables of Shared Digits [archived]

Example

161761^2 = 26166621121.

Crossrefs

Sequence in context: A027521 A238147 A137014 * A014468 A156373 A368930

Adjacent sequences: A137010 A137011 A137012 * A137014 A137015 A137016

Keyword

base,nonn,more

Author

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

Status

approved