A136821 Numbers k such that k and k^2 use only the digits 0, 1, 2, 4 and 9.

0, 1, 2, 10, 11, 12, 20, 21, 49, 100, 101, 102, 110, 120, 149, 200, 201, 210, 212, 490, 499, 1000, 1001, 1002, 1010, 1011, 1012, 1020, 1021, 1049, 1100, 1101, 1102, 1200, 1201, 1411, 1421, 1429, 1490, 2000, 2001, 2010, 2011, 2100, 2101, 2120, 4499, 4900, 4990, 4999, 10000, 10001, 10002, 10010, 10011, 10012, 10020, 10021, 10100, 10110, 10120, 10200, 10210

Offset

1,3

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1064

J. Wellons, Tables of Shared Digits [archived]

Example

490940149^2 = 241022229900142201.

Crossrefs

Sequence in context: A136820 A256437 A136810 * A105116 A136819 A136816

Adjacent sequences: A136818 A136819 A136820 * A136822 A136823 A136824

Keyword

base,nonn

Author

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

Status

approved