A136875 Numbers k such that k and k^2 use only the digits 0, 1, 6 and 7.

0, 1, 10, 100, 1000, 10000, 100000, 1000000, 1077776, 10000000, 10777760, 100000000, 107777600, 1000000000, 1077776000, 10000000000, 10777760000, 100000000000, 107777600000, 1000000000000, 1077776000000, 10000000000000, 10777760000000, 100000000000000, 107777600000000

Offset

1,3

Comments

Generated with DrScheme.

Links

Table of n, a(n) for n=1..25.

J. Wellons, Tables of Shared Digits [archived]

Example

107777600000000^2 = 11616011061760000000000000000.

Crossrefs

Sequence in context: A136842 A136872 A119084 * A135654 A219112 A232661

Adjacent sequences: A136872 A136873 A136874 * A136876 A136877 A136878

Keyword

base,nonn

Author

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

Status

approved