A136992 Numbers k such that k and k^2 use only the digits 1, 2, 4 and 6.

1, 2, 4, 11, 12, 21, 46, 121, 162, 642, 6642, 11142, 664162, 66641662, 6664414162, 6642624666662

Offset

1,2

Comments

Generated with DrScheme.

Links

Table of n, a(n) for n=1..16.

J. Wellons, Tables of Shared Digits [archived]

Example

6642624666662^2 = 44124462462146446614222244.

Crossrefs

Sequence in context: A363702 A136995 A136993 * A089694 A071069 A116439

Adjacent sequences: A136989 A136990 A136991 * A136993 A136994 A136995

Keyword

base,nonn,changed

Author

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

Status

approved